Practice Test

1) Which of the following is not an organic compound?

2) The first organic compound ever prepared in laboratory from elements is

3) Compounds having the same molecular formula but differing in their structure are called as

4) The ability of carbon atom to combine with one another to form long chains, branched chains and rings is known as

5) Fuel used in automobiles is a mixture of

6) Which of the following is not a petroleum product?

7) Common element in all the organic compounds other than hydrogen is

8) Which of the following statements is wrong?

9) Which of the following elements forms the largest number of compounds?

10) Which of the following is not the criteria for purity of a substance?

11) Sugar is obtained from its saturated solution by

12) Benzoic acid can be purified by

13) Organic liquids like acetone is purified by _____ methods.

14) Extraction of oils and fats from seeds and essence from flowers is done by using

15) To purify mixtures of organic compounds _____ method is used.

16) Sodium chloride crystals are

17) Alum crystals are

18) Copper sulphate crystals are

19) Quartz crystals are

20) The process of obtaining a solid in a pure crystalline form, from solution is known as

21) The process ______ is used to separate two or more solids which are soluble in a given solvent

22) Urea melts at _____ and acetanilide melts at 387 K.

23) The soluble solids and miscible liquids are separated by

24) Process used for the separation of compounds from the mixture of two or more miscible liquids having different boiling points is called

25) Separation of binary mixture of acetone and benzene is done by various types of

26) The purity of crystals can be checked by determining its

27) A crystalline substance is that

28) Boiling point of a liquid depends upon

29) In the detection of melting point, thermometer along with the capillary containing the substance is placed in

30) When undissolved solid is in contact with its solution, the supernatant liquid is called

31) To determine the melting point, powdered substance is filled in

32) To determine the boiling point, powdered liquid is filled in

33) The two solids of variable solubilities are separated by the process of

34) In Lassaigne method, the elements of the organic compound are fused with metallic

35) The presence of nitrogen in an organic compound is confirmed when the complex form has

36) The formation of ______ precipitate which is insoluble in ammonium hydroxide confirms the presence of iodine

37) In Lassaigne method, the treatment of sodium fusion extract with sodium niroprusside produces violet colour which indicates the presence of

38) _____ is usually detected from the chemical properties of the compound

39) ______ method is not applicable to compounds containing nitrogen in the form of nitro and azo group

40) Carius method is used for the estimation of fluorine as ______ is water soluble.

41) In the Kjeldahls method, nitrogen in the organic compound is converted to

42) 0.4 gm of an organic compound gave 0.188 g of silver bromide by halogen estimation method. The percentage of bromine in the compound is(At. Mass of Ag = 108, Br = 80)

43) In the Dumas method, for the estimation of nitrogen, 0.84 g of an organic compound gave 448 mL of nitrogen at S.T.P. The percentage of nitrogen in the compound is

44) 0.2585 g of an organic compound containing iodine was heated with excess of strong nitric acid and silver nitrate in a Carius tube. The precipitate of silver iodide was filtered, washed and dried. Its weight was found to be 0.3894 g. Calculate the percentage of iodine in the compound

45) 0.4 g of an organic compound containing phosphorus gave 0.555 g of magnesium pyrophosphate by usual analysis. Calulate the percentage of phosphorus in the compound

46) Dumas method is used for estimation of

47) ______ has a linear structure due to sp hybridization of carbon

48) Bond enthalpy and bond length in organic compounds are influenced by

49) Aromatic compounds contain atleast one aromatic ring which resembles________ in their chemical behaviour

50) The chemical properties of an organic compound are characterizes by its

51) The homologous series consist of homologues which are arranged in the increasing order of their

52) Which of the following is not a cyclic compound?

53) Which of the following names is not correct in the IUPAC system of nomenclature?

54) The compound having one isopropyl group is

55) Which one of the following is not an alcohol?

56) Which of the following compounds does not contain a C = O bond?

57) The effect in which the displacements of electrons are temporary is called

58) The phenomenon in which none of the structure describes most of the properties of the compound is termed as

59) The number of contributing resonance structure contributes to

60) In the '' no bond'' resonance structures carbon - carbon bond has _____ character

61) Isopropyl radical has ______ hyperconjugation structures.

62) The process of breaking or cleavage of covalent bond is known as

63) Homolysis also occurs in the presence of catalyst such as

64) The species in which carbon atom possesses a octet of electrons and a negative charge is called

65) Stability of carbocation increases as the number of _____ substituents bonded to positively charged carbon atom increases

66) Carbocations are______ and acts as a ______

67) Addition reaction is not shown by

68) Which of the following is an example of elimination reaction?

69) Purification of aniline and nitrobenzene can be done by ______ method

70) Monoclinic sulphur has _______ crystals

71) Copper sulphate crystal are of ______ colour

72) Non - volatile soluble Impurities can be removed from a liquid by the process of

73) The smallest ratio which shows the number of atoms of each element in a molecule of a compound is the

74) In Lassaigne method, the presence of ______ is confirmed, if the white precipitate is soluble in ammonium hydroxide

75) Homologues differ in molecular weight by

76) Identify the bond formed which is polar in nature

77) Which of the following carbocation has the least stability?

78) The free radicals resulting from the cleavage of a bond are

79) The general formula for an ether is

80) The general formula of a carboxylic acid is

81) The general formula of an ester is

82) ______ is filled in U-tube to absorb water from the organic mixture

83) Molecular formula of benzene is

84) In the Dumas method for the estimation of nitrogen, the gas collected in nitrometer is

85) An organic compound containing bromine gave the following result on analysis C = 21.96 %, H = 4.58 % and Br = 73.36 % Find the molecular formula of the compound if the vapour density is 54.5

86) An organic substance on combusion gave 53.2% carbon, 15.5% hydrogen and 31.3% nitrogen. If the molecular weight is 45. Find the molecular formula

87) The angle between the four valencies of carbon is

88) In the homologous series, the successive members differ from each other in molecular formula by

89) Which of the following is methanol?

90) Which of the following is butan - 2 -ol?

91) Which one of the following could be a cyclic alkane?

92) Identify the electron withdrawing group from the following

93) Which of the following carbocation wil be the most stable?

94) Which of the following species does not act as a nucleophile?

95) Identify the molecule which is NOT a nucleophile from the following

96) Which of the following series contains only nucleophiles?

97) Which of the following species has electron releasing (or + I inductive) effect?

98) Which of the following species is not an electrophile?

99) Which of the following is an electrophile?

100) Friedrich wohler synthesized urea by heating a mixture of

101) An organic compound containing C, H and N give the following result on analysis
C = 40%, H = 13.33% and N = 46.67% what would be the empirical formula?

102) Which is the structural formula for 3 - ethyl, 2 - methylhex - 1 -ene?

103) Which is the structural formula of 1, 2, 3 - propanetriol?

104) The name of some compounds are given, which one is not in IUPAC system?

105) Which is 1, 1- dimethylcyclohexane?

106) Which is 1, 2- dimethylcyclobutane?

107) Which of the following is hexan - 2 - ol ?

108) Which of the following is 4-methylpentan-2-ol ?

109) Which of the following is 2-methylpentan-3-ol?

110) Which of the following is 4-methylpentan-1-ol ?

111) Which of the following is a cycloalkane ?

112) Which is 1, 1-Dichlorobutane ?

113) Which structure below represents a ketone ?

114) Which structure below represents an aldehyde ?

115) Which structure below represents an ether ?

116) The general formula of an aldehyde is

117) The structure of 4 methyl - 2 - penten - 1 - ol is

118) Iso-butyl chloride is

119) 2-Methyl-2-butene will be represented as

120) Which class of compound is not reported in IUPAC nomenclature?

121) Cyclohexane is

122) The structure representing a heterocyclic compound is

123) The formula of 3-chloro-2,2dimethylbutane is

124) 3-Methylpenta-1,3-diene is

125) Which is an alternate name for methyl-n-propylmethane?

126) Which of the following is heterocyclic aromatic species?

127) Which nomenclature in IUPAC is not correct?

128) 3-penylpropenoic acid is IUPAC name of

129) Which among the following is the correct IUPAC name of isomylene?

130) The correct IUPAC name of acetonitrile is

131) neo-Heptyl alcohol is correctly represented as

132) A student named the compound as 1,4-butadiene

133) 2-Methylbut-2ene will be represented as

134) The incorrect IUPAC name is

135) IUPAC name of 3-iso-propyl-o-xylene is

136) IUPAC name of 4-iso-propyl-m-xylene is

137) Names of some compound are given. Which one is not in IUPAC system?

138) Which of the following IUPAC names is correct?

139) The structural formula of 2-methyl-2-butene is

140) vinyl carbinol is

141) The correct IUPAC name of phenetole is

142) The IUPAC name of acraldehyde is

143) The structural formula of cyclohexyl alcohol is

144) The IUPAC name of tert-butyl chloride is

145) Indicate the wrongly named compound

146) Which of the following compound has wrong IUPAC name?

147) The compound which has one iso-propyl group is

148) Ammonia molecule is

149) Heterolysis of propane gives

150) Which of the following contains only three pairs of electrons

151) Which of the following species is paramagnetic?

152) Electrophiles are

153) Homolytic and heterolytic bond dissociation eneriges are

154) In hyperconjugation, the atom involved is

155) Hyperconjugation is

156) Reaction involving heterolytic fission are said to be produce via

157) Due to its sextet (having six electrons), the carbonium ions are

158) The +I-effect (inductive effect) is shown by

159) Which of the following is singlet carbene?

160) Which one of the following compound is most acidic?

161) The -I effect is shown by

162) Which of the following is strong base?

163) Which of the following is an electrophilic reagent?

164) Shifting of electron of a multiple bond under the influence of a reagent is called

165) An alkene is most likely to react with

166) Sulphur trioxide is

167) Homolytic fission of C - C bond in ethane gives an intermediate in which carbon is ................ hybridised.

168) In carbonium ion the carbon bearing the positive charge is

169) The central C atom of a carbanion possesses

170) Chlorine in vinyl chloride is less reactive because

171) The shape of carbonium ion is

172) Which of the following is nucleophile?

173) A neutral divalent carbon intermediate produced by the removal of two attached atom is called

174) Which group has the maximum inductive effect?

175) Zero inductive effect is shown by

176) The structure of tertiary butyl carbonium ion is

177) The compound which gives the most stable carbonium ion on dehydration is

178) Which of the following statement is not correct?

179) Which one of the following does not show resonance?

180) Select the correct order of basic nature

181) Which of the following can act as an nucleophile?

182) The strongest base among the following

183) Free radical can undergo

184) The homolytic fission of a hydrocarbon results in the formation of

185) Which of the following is not a nuclephile?

186) Electrophilic reagent are

187) Which of the following statement is false about resonance contribution structures?

188) Which of the following is an electrophilic reagent?

189) Heterolytic cleavage of a covalent bond gives only

190) Which of the following is correct regarding the -I effect of the substituents?

191) Nucleophilicity order is correctly represented by

192) Which of the following is an electrophile?

193) Which of the following is an nucleophile?

194) The most reactive nucleophile among the following is

195) Which of the following is most stable?

196) Which of the following contains three pairs of electrons in the valence shell?

197) Which of the following is the most stable carbocation (carbonium ion)?

198) Which of the following is least stable?

199) In which of the following homolytic bond fission takes place?

200) Select the most stable carbocation from among the following.

201) The compound having only primary hydrogen atom is

202) Which of the following statement regarding the resonance energy of benzene is correct?

203) The most stable carbonium ion among the following is

204) Which of the following is least stable carbonium ion?

205) Which of the following behaves both as a nucleophile and as an electrophile?

206) Point out the correct statement about resonance?

207) The most stable carbanion among the following is

208) Resonance structure of a molecule does not have

209) Which of the following acids would you expect to be the strongest?

210) Among the following the most basic compound is

211) Homolytic fission of C - C bond in ethane gives an intermediate in which carbon?

212) The kind of delocalisation involving sigma bond orbitals is called

213) The most unlikely representation of resonance structure of p-nitrophenoxide ion is

214) Which of the following has the highest nucleophilicity?

215) Which is most stable?

216) The addition of HBr on 2-Butene is an example of

217) Carbanions initiate

218) Ease of abstraction of hydrogen is greater when attached to

219) Why is light necessary to bring in chlorination reaction of alkane?

220) What information is provided by reaction mechanism?

221) Which of the following alkyl halides is used as a methylating agent?

222) The reagent used in dehydrohalogenation process is

223) Which one is an elimination reaction?

224) The yield in organic reaction is generally poor because the reaction are

225) The attacking species in the aromatic sulphonation is

226) Addition of HI on double bond of propene yields iso-propyl iodide as major product. It is because the addition proceeds through

227) Among the following compound which is most reactive towards nitration

228) Dehydrogenation of ethanol to give ethanal is

229) Acetaldehyde is the rearrangement product of

230) Which of the following is an example of elimination reaction?

231) Which species represent the electrophile in aromatic nitration?

232) Which species represent the electrophile in aromatic nitration?

233) The typical reaction of olefinic bond is

234) The formation of cyanohydrin from a ketone is an example of

235) The compound which gives least stable carbocation during dehydration is

236) Which of the following is an example of nucleophile?

237) Which of the following is non aromatic?

238) The +I effect of alkyl group is in the order

239) With a change in hybridisation of the carbon bearing the charge, the stability of a carbanion increase in the order

240) Among the following, the least stable resonance structure is

241) The IUPAC name of neo-pentane is

242) 3-phenylpropenoic acid is IUPAC name of :

243) The strain in bonds of cyclopropane is :

244) Chlorine in vinyl chloride is less reactive because :

245) The alkene that exhibits geometrical isomerism is

246) Pick out the alkane which differs from the other members of the group

247) Detection of sulphur in sodium extract is done by

248) Acidified sodium fusion extract on addition of ferric chloride solution gives blood red colouration which
confirm the presence of

249) Conversion of chlorobenzene to phenol involves

250) In sulphur detection of an organic compound, sodium nitroprusside solution is added to sodium extract.
Formation of violet colour is due to

251) The maximum bond energy is present

252) The number of secondary hydrogens in 2, 2-dimethyl butane is

253) Find the non-staggered form (s) of ethane :

254) With a change in hybridisation of the carbon bearing the charge, the stability of a carbanion increase in the
order

255) The addition reaction among the following is

256) The correct definition for organic chemistry is :

257) Which of the organic compounds will give red colour in Lassaigne test?

258) The compound formed in the positive test for nitrogen with the Lassaigne solution of an organic
compound is

259) The production of an optically active compound from a symmetric molecule without resolution is called :

260) Which is wrong IUPAC name?

261) Which of the following statements is wrong?

262) Nitroethane can exhibit one of the following kind of isomerism

263) Which of the following would show configurational enantiomorphism?

264) Heterolysis of carbon-chlorine bond produces :

265) Maximum enol content is in

266) Which of the following compounds will show metamerism?

267) Which of the following is elimination reaction

268) Mixture of sugar and common salt is separated by crystallisation by dissolving in

269) The general formula for cycloalkanes is :

270) The bond that undergoes heterolytic cleavage most easily is

271) Phosphorus is estimated as

272) Species containing carbon with three bonds and an electron are called :

273) Which of the aldehyde is most reactive?

274) 3-methyl penta-1,3-diene is :

275) Which of the following compounds is optically active?

276) “The negative part of the addendum adds on the carbon atom joined to the least number of hydrogen
atoms.” This statement is called :

277) d-tartaric acid and l-tartaric acid are :

278) Which of the following is a pair of functional isomers?

279) Which of the following is an optically active compound?

280) Bond energy ……..with the increase in number of lone pairs on the bonded atoms.

281) A liquid decomposes at its normal boiling point. It can be purified by

282) On monochlorination of 2-methyl butane, the number of chiral compounds formed are :

283) Stability of which intermediate is not governed by hyperconjugation?

284) The ammonia evolved from the treatment of 0.30g of an organic compound for the estimation of nitrogen
was passed in 100mL of 0.1M sulphuric acid. The excess of acid required 20mL of 0.5 M sodium hydroxide
solution for complete neutralisation. The organic compound is

285) Number of possible isomers of glucose are :

286) The stability of 2,3-dimethyl but-2-ene is more than 2-butene. This can be explained in terms of :

287) Protin solvent is

288) Among the following compounds (I-III) the correct order of reaction with electrophilic reagand is

289) How many chiral compounds are possible on monochlorination of 2-methyl butane?

290) The epoxide ring consists of which of the following?

291) The reaction which is not the example of nucleophilic substitution among the following is

292) An important chemical method to resolve a racemic mixture makes use of the formation of :

293) Which of the following complex formation indicates presence of sulphur in the organic compound when
sodium nitroprusside is added to sodium extract of the compound?

294) Who pointed out the concept hyperconjugation?

295) Alkyl halide can be converted into alkene by

296) The optically active alkane with lowest molecular weight is :

297) Which type of isomerism is most common among ethers?

298) With a change in hybridisation of the carbon bearing the charge, the stability of a carbanion increase in the
order

299) Which of the following compounds are not arranged on order of decreasing reactivity towards
electrophilic substitution?

300) A mixture of camphor and benzoic acid can be separated by

301) Resonance energy is more for

302) Grignard reagent adds to

303) Which of the following is not chiral?

304) Detection of phosphorus in the compound can be done by its conversion into phosphate. Reagent to
identify phosphate ion is

305) The hemolytic fission of a hydrocarbon results in the formation of:

306) Methoxy methane and ethanol are

307) Which one of the following monoenes does not exhibit geometric isomerism?

308) When two halogen atoms are attached to two adjacent carbon atoms, the dihaloalkane is called :

309) The electrophile involved in the sulphonation of benzene is

310) In Kjeldahl’s method, then nitrogen present in the organic compound is quantitatively converted into

311) The compound which gives the most stable carbonium ion on dehydration is

312) A similarity between optical and geometrical isomerism is that :

313) Reaction of phenol with chloroforms/sodium hydroxide to give o-hydroxy benzaldehyde involves the
formation of

314) Which kind of fission is favoured by sunlight?

315) Which class of compounds can exhibit geometrical isomerism?

316) Which of the following compounds is optically active?

317) To which ring size cycloalkanes, Baeyer’s strain theory is not valid?

318) Which of the following orders is not correct regarding the – I effect of the substitutents?

319) Lactic acid shows optical activity in :

320) In cyclopropane, cyclobutane and cyclohexane, the common group is

321) Allyl isocyanide has :

322) +I effect is shown by

323) Which one of the following is the stable structure of cyclohexatriene?

324) Total number of rotational conformers of n-butane are :

325) Sublimation is a process in which a solid

326) The group named as benzal possesses ……nature.

327) 29.5 mg of organic compound containing nitrogen was digested according to Kjeldahl’s method and the
evolved ammonia was absorbed in 20mL of 0.1 M HCl solution. The excess of the acid required 15mL of
0.1M NaOH solution for complete neutralisation. The percentage of nitrogen in the compound is

328) The highest electrical conductivity of the following aqueous solutions is of

329) Nucleophiles are :

330) Ethyl acetoacetate exhibits :

331) A molecule of urea can show

332) Geometrical isomerism is possible in case of

333) Anti-Markownikoff addition of HBr is not observed in :

334) The number of 1°, 2° and 3° carbon atoms present in isopentane are respectively :

335) The restricted rotation about carbon-carbon double bond in 2-butene is due to:

336) Formation of acetylene from ethylene is an example of

337) The structure of cis-bis (propenyl) ethane is :

338) The compound which reacts with HBr obeying Markownikoff’s rule is:

339) A molecule of benzene contains :

340) Zn—Cu couple used as reducing agent is :

341) Considering the state of hybridization of carbon atoms, find out the molecule among the following which is
linear?

342) Tautomerism is not exhibited by

343) Which of the substance is purified by sublimation?

344) The number of optical enantiomorphs of tartaric acid :

345) Which of the following is useful for making pure water from a solution of salt in water?

346) Which of the following does not contain chiral carbon atom?

347) Among the following orbital bonds, the angle is minimum between :

348) Polarization of electron in acrolein may be written as

349) Two crystalline forms of a substance, one being a mirror image of the other are called :

350) Hyperconjugation is

351) Which one of the following reactions is a condensation reaction?

352) Which group has the maximum-Inductive effect?

353) Which is incorrect about enantiomorphs?

354) Which one is the seniormost functional group in the nomenclature of an organic compound if it possesses
more than one functional group?

355) The reaction intermediate produced, by homolytic cleavage of a bond is called

356) Fractional distillation is useful in distillation of

357) Which of the following species is paramagnetic?

358) Free radical has unpaired electron.

359) Select the organic compound which was prepared for the first time in laboratory from its elements :

360) Which of the following compounds can exist in optically active form?

361) Select the most reactive cycloalkane :

362) Glyoxal is

363) IUPAC name of acraldehyde is

364) What information is provided by reaction mechanism?

365) The enolic from of acetone contains

366) Which of the following acids has the smallest dissociation constant?

367) Among the following the strongest nucleophile is

368) Which of the following statements is correct?

369) Which of the following species does not exert a resonance effect?

370) Lactic acid molecule has

371) The arrangement of atoms that characterises a particular stereoisomer is called :

372) An alkane forms isomers if the number of carbon atoms is :

373) Which of the following statements is correct?

374) Qualitative test of halogens in an organic compound is made by

375) Which one of the following will most readily be dehydrated in acidic conditions?

376) The family to which methoxyethene belongs, is :

377) Electrophiles are :

378) Iso-propyl chloride undergoes hydrolysis by

379) Carbon and hydrogen are estimated in organic compounds by

380) The compound having highest dipole moment is :

381) A free radical is :

382) In electrophilic aromatic substitution reaction, the nitro group is meta directing because it

383) Which of the following conformers for ethylene glycol is most stable?

384) Which of the following compounds is resistant to nucleophilic attack by hydroxy ion?

385) The stabilization due to resonance is maximum in :

386) A mixture of camphor and benzoic acid can be easily separated by

387) Fractional crystallisations is carried out to separate a mixture of

388) The type of isomerism observed in urea molecule is :

389) Which of the following intermediate have the complete octet around the carbon atom?

390) A neutral divalent carbon intermediate produced by the removal of two attached atoms is called :

391) Which types of isomerism is shown by 2, 3-dichlorobutane?

392) Among the following compounds, the most acidic is

393) Electrophiles are :

394) On monochlorination of n-pentane, the number of isomers formed is :

395) Cyclohexane is :

396) Which of the following is a primary halide?

397) The percentage of ′s′ character of the hybrid orbital of carbon in ethane, ethane and ethyne respectively
are :

398) Which is a chiral molecule?

399) The stability of a carbonium ion depends upon

400) Bromination of alkanes involves

401) The isomeric cis-2-butene and trans-2-butene can be distinguished on the basis of :

402) Lassaigne’s test is not used for the detection of

403) The simplest formula of a compound containing 50% of element X (at. wt 10) and 50% of element Y (at.
wt. 20) is

404) n-pentane, iso-pentane, and neo – pentane are examples for isomers of the type

405) Homolytic fission of C— C bond in ethane gives an intermediate in which carbon is ….hybridized.

406) Pick out the correct statement from the following and choose the correct answer from the codes given
below
I. Hexa-1, 5-diene is a conjugated diene
II. Prop-1, 2-diene is conjugated diene
III. Hexa-1, 3-diene is a conjugated diene
IV. Buta-1, 3-diene is an isolated diene
V. Prop-1, 2-diene is a cumulative diene

407) Which among the following is the correct IUPAC name of isoamylene?

408) Which of the following compounds exhibits geometrical isomerism?

409) Which one of the following compounds, is most acidic?

410) An organic compound has carbon and hydrogen percentage in the ratio 6:1 and carbon and oxygen
percentages in the ratio 3:4. The compound has the empirical formula

411) Among the following the one which does not exhibit functional group isomerism is :

412) Which one of the following is a secondary alcohol?

413) Electromeric effect is

414) The angle of rotation of plane of polarized light depends upon :

415) Which of the following shows geometrical isomerism?

416) Which of the following cannot undergo nucleophilic substitution under ordinary conditions?

417) The C— C bond length of the following molecules is in the order.

418) Isomerism among compounds due to the migration of a proton is known as :

419) Removal of hydrogen atom is easier when it is attached to :

420) The order of stability of carbanions is :

421) Glycerine contains

422) Which of the following pairs of carbon skeletons in an example of isomerism?

423) In the following the most stable conformation of n-butane is :

424) An electrophilic reagent must have

425) Which one of the starred carbons is the asymmetric one?

426) The chemical name of anisole is

427) How many optically active stereomers are possible for butan-2, 3-diol?

428) Naphthalene molecule contains :

429) The first organic compound urea was synthesized in the laboratory by:

430) Which of the following is not a nucleophile?

431) Which of the following compounds can exhibit optical isomerism?

432) Which is the most stable carbocation?

433) The correct structure of 4-bromo-3-methyl-but-1-ene.

434) Which method is used to separate sugars?

435) Sublimation can't be used for purification of

436) Which of the following is phenyl ethanoate?

437) Zero inductive effect is shown by :

438) Which of the following alkyl halides is used as a methylating agent?

439) Which one of the following has the most nucleophilic nitrogen?

440) Chlorobenzene is 0, p-directing in electrophilic substituting reaction. The directing influence is explained
by

441) Which of the following orders regarding relative stability of free radicals is correct?

442) Carbon tetrachloride has no net dipole moment because of :

443) The isomers which are interconverted through rotation around a single bond are

444) The number of optical isomers of pent-3-en-2-ol is :

445) Dehydrohalogenation of an alkyl halide is a/an

446) The minimum number of carbon atoms which a ketone may contain is :

447) What is the formula of tertiary butyl alcohol?

448) The IUPAC name of neopentane is

449) Select the strongest bond :

450) Which of the following molecules is achiral?

451) An enantiomerically pure acid is treated with racemic mixture of an alcohol having one chiral carbon. The
ester formed will be

452) Which of the following statements is necessarily true in the case of isomeric organic compounds?

453) Cis - trans, isomers generally

454) Among the following compounds nitrobenzene, benzene, aniline and phenol, the strongest basic behaviour
in acid medium is exhibited by :

455) Geometrical isomerism is not shown by :

456) An optically active compound is :

457) In Lassaigen's test, the organic compound is fused with a piece of sodium metal in order to

458) Which of the following sodium compound/compounds are formed when an organic compound containing
both nitrogen and sulphur is fused with sodium?

459) In hyperconjugation, the atom involved is :

460) Reactivity of hydrogen atoms attached to different atoms in alkanes has the order :

461) Which has maximum percentage of chlorine?

462) Which reaction sequence would be best to prepare 3-chloro-aniline from benzene?

463) Why is light necessary to bring in chlorination reactions of alkane?

464) For all practical purposes, influence of inductive effect is neglected after :

465) Geometrical isomers differ in :

466) The study of three dimensional structure of molecule is called :

467) Which of the following contains only three pairs of electrons?

468) 2-hexyne gives trans-2-hexene on treatment with

469) Lassaigne’s test for the detection of nitrogen fails in

470) The relative adsorption of each component of the mixture is expressed in terms of

471) t-butyl alcohol is

472) A compound containing 80% C and 20% H is likely to be

473) Overlap of which of the following atomic orbitals would be maximum to form the strongest covalent bond?

474) During elimination reactions, the hybrid state of carbon atoms involved in change shows:

475) Who proposed the tetrahedral mirror image structures to a pair of enantiomers?

476) Heterolysis of propane gives :

477) Delocalised electrons are present in

478) Compounds which rotate plane polarised light in clockwise direction are known as :

479) Carbanions initiate :

480) Impure glycerine can be purified by

481) IUPAC name of urea is :

482) Which of the following process is not used for the purification of solid impurities?

483) Dehydration of alcohol is an example of which type of reaction?

484) The organic liquid that mix freely with water is :

485) The best method for the separation of naphthalene and benzoic acid from their mixture is

486) The reagent used in dehydrohalogenation process is :

487) Hydride shift from C-2 will give the most stable resonance stabilized carbocation as

488) Hyperconjugation involves overlap of the following orbitals

489) Most stable carbonium ion is

490) During a nitration of benzene, the attacking electrophile is

491) The (R) and (S) enantiomers of an optically active compound differ in

492) The number of chiral centres in (+) –glucose

493) Hydrogen cyanide and hydrogen isocyanide are :

494) Which of the following hydrocarbons is most unsaturated?

495) Sometimes the behaviour of a compound is explained by assuming that it exists in a world between two or
more different possible structures. This phenomenon is called :

496) Which one of the following pairs represents stereoisomerism?

497) The large number of organic compounds is due to:

498) Formic acid is a stronger acid than acetic acid. This can be explained using

499) The energy of C— C triple bond in acetylene in kcal is :

500) In which of the following molecules, the resonance effect is not present?

501) The tautomeric form which is less stable is called :

502) The effect involving the complete transfer of a shared pair of electrons to one of the atoms joined by a
multiple bond at the requirement of attacking reagent is called :

503) Which of the following acids does not exhibit optical isomerism?

504) Which of the following conformations of cyclohexane is chiral?

505) Which type of isomerism is shown by propanal and propanone?

506) The best method to separate the mixture of ortho -and-para nitrophenol (1:1) is

507) Which of the following does not show electrometric effect?

508) Shifting of electrons of a multiple bond under the influence of a reagent is called :

509) 0.4 g of a silver salt of a monobasic orgainc acid gave 0.26 g pure silver on ignition. the molecular weight of
the acid is (atomic weight of silver=108)

510) Which pair represents chain isomers?

511) The number of valence electrons in the excited carbon atom is :

512) A hydrocarbon contains 10.5 g carbon and 1 g hydrogen. Its 2.4 g has 1 L volume at 1 atm and127℃.
Hydrocarbon is

513) A mixture of oil and water is separated by

514) The structural formula of methyl aminomethane is :

515) The number of optically active isomers of tartaric acid are

516) Which of the following has the highest degree of coordination bond?

517) A mixture of o-nitrophenol and p-nitrophenol can be separated by

518) State the hybridization of carbon present in triplet carbene

519) Which of the following cannot show electromeric effect ?

520) Hydride ion transfer takes place in

521) An organic compound contains 29.27% carbon, 5.69 % hydrogen and 65.04% bromine. Its empirical
formula is

522) The function of soda lime, a mixture of solid NaOH and solid CaO during decarboxylation of carboxylic
acids is :

523) A racemic mixture is a mixture of :

524) A mixture of iodine and sodium chloride can be easily separated by

525) The property by virtue of which a compound can turn the plane of polarization of light is known as :

526) Correct order of stability is

527) In the estimation of sulphur in an organic compound, fuming nitric acid is used to convert sulphur into

528) Which of the following will be chiral?

529) Which of the following is not a nucleophile?

530) Least stable conformer of cyclohexane is

531) The compound isomeric with acetone is :

532) Which of the chloride is less reactive towards hydrolysis?

533) Glycerol is an alcohol which can be classified as

534) The electromeric effect in organic compounds is a :

535) Copper wire test of halogens is known as

536) Which of the following is singlet carbine?

537) Which of the following will be easily nitrated?

538) Optical isomerism is shown by

539) Williamson’s synthesis involves

540) Free radicals can undergo :

541) Metamers of ethyl propionate are

542) During addition of bromine on ethene, the first species formed is

543) Which one is not is IUPAC system?

544) The compound which exhibits optical isomerism is :

545) Homologous compounds have :

546) How many chiral compound are possible on mono chlorination of 2-methyl butane?

547) Which of the following IUPAC names is correct?

548) Ethyl acetoacetate shows, which type of isomerism?

549) Enol content is highest in

550) The maximum number of stereoisomers possible for 3-hydroxy-2-methyl butanoic acid is :

551) Which of the following will exhibit cis - trans isomerism?

552) Which of the following is most reactive towards electrophilic nitration?

553) Ethylene dichloride and ethylidine chloride are isomeric compounds. The false statement about these
isomers is that they

554) Which of the following compounds has incorrect IUPAC nomenclature?

555) The IUPAC name for tertiary butyl iodide is

556) Geometry of methyl free radical is

557) Dehydrogenation of ethanol to give ethanal is :

558) Which one of the following compounds will be most readily dehydrated ?

559) Among the following compounds (I-III) the correct order of reaction with the electrophile is

560) Which of the following is an electrophile?

561) An organic compound having carbon, hydrogen and sulphur contains 4% of sulphur. The minimum
molecular weight of the compound is

562) The structure of tertiary butyl carbonium ion is :

563) A carbonium ion contains :

564) The formula of 3-chloro-2,2-dimethylbutane is :

565) Which shows the easier electrophilic substitution in ring?

566) The number of isomeric pentyl alcohols possible is

567) Naphthalene can be easily purified by

568) The correct structure of dimethylbutyne is :

569) Which of the following is free radical?

570) Quantitative measurement of nitrogen in an organic compound is done by the method

571) During pyrolysis of an alkane, C— C bond breaks faster than the C— H bond because :

572) State of hybridization of carbon atom of carbene in the singlet state is :

573) The number of 1° and 2°carbon atoms in n-pentane are respectively :

574) In benzene, all the C - C bonds are of equal length because of :

575) Nitration of benzene is

576) Nitrogen containing organic compound when fused with sodium forms

577) Which of the following is strongest nucleophile?

578) In Kjeldahl's method for the estimation of nitrogen, the formula used to

579) The most satisfactory method to separate sugars is to use

580) The structures that do not actually exist are called :

581) Which of the following is the most stable carbocation?

582) Which one of the following compound is most acidic?

583) The number of carbon atoms present in neopentane are :

584) The Cl—C—Cl angle in 1,1,2,2-tetrachloroethene and tetrachloromethane respectively will be about :

585) The number of possible enantiomeric pairs that can be produced during monochlorination of 2-methyl
butane is :

586) Chromatography technique is used for the separation of

587) The stability of the carbocation decreases in the order

588) What will be the compound if two valencies of carbonyl group are satisfied by two alkyl groups?

589) The most stable carbocation is :

590) Which of the following belongs to – I group?

591) Which is most commonly used to dry organic liquids?

592) In Lassaigne's solution, pink/violet colouration is produced when sodium nitroprusside solution is added.
It indicates the presence of

593) A carbonium ion is formed when a covalent bond between two atoms in an organic compound undergoes :

594) Racemic mixture is formed by mixing two

595) In a solution, solvent can be separated from solute by one of the following process

596) Buta-1,3-diene and But-2-yne are :

597) The intermediate during the addition of HCl to propene in the presence of peroxide is :

598) Which of the following represents neo- pentyl alcohol?

599) 2-methyl-2-butene will be represented as :

600) The most abundant organic compound in the world is :

601) The chain initiating species in free radical chlorination of methane is :

602) Which of the following belongs to +I group?

603) Different structures generated due to rotation about, C – C axis, of an organic molecule, are examples of

604) Which of the following molecules is expected to rotate the plane of plane-polarised light?

605) Chromatography was discovered by

606) Sodium nitroprusside when added to an alkaline solution of sulphide ions produces a colouration

607) Isopentane can form four isomeric mono bromo derivatives. How many of them are optically active?

608) Which one of the following does not show resonance?

609) Select the organic compounds aliphatic in nature but burn with smoky flame :

610) Which of the following is an electrophilic reagent?

611) A mixture of iron fillings and sulphur cannot be separated by

612) Isomers of propionic acid are

613) Reactions involving heterolytic fission are said to proceed via :

614) Which of the following orders is true regarding the acidic nature of COOH?

615) Which behaves both as a nucleophile as well as an electrophile?

616) In which case the carbon-carbon bond length is same?

617) Incorrect statement is

618) Which one of the following explain, why propene undergo electrophilic addition with HBr, but not with
HCN?

619) Select the correct statement about the detection of sulphur in organic compounds

620) Rotation of plane polarized light can be measured by :

621) A molecule having three different chiral carbon atoms, how many stereoisomers it will have?

622) Which of the following is the strongest base?

623)
Intermediate product formed in the acid catalysed dehydration of n-propyl alcohol is :

624) Which of the following has the highest nucleophilicity?

625) Anthracene is purified by

626) Chiral molecules are those which:

627) Who is called the ‘Father of Chemistry’?

628) With a change in hybridization of the carbon bearing the charge, the stability of a carbanion increase in the
order

629) The total number of alkenes possible by dehydromination of 3-bromo-3-cyclopentylhexane using alcoholic
KOH is

630) The Cl—C—Cl bond angle in dichloro methane will be :

631) In the following reaction sequence, the chain initiation steps is :

632) The most stable carbanion is

633) If a compound on analysis was found to contain C = 18.5%, H = 1.55%, Cl =55.04% and O = 24.81% then
its empirical formula is

634) 2-pentanone and 3-methyl-2-butanone are a pair of ….. isomers.

635) Liebig’s test is used to estimate

636) In fructose, the possible optical isomers are

637) Which structure can be explained by taking ground state configuration of atom?

638) Which one of the following carbanions is the least stable?

639) Which one of the following is the most energetic conformation of cyclohexane?

640) The energy difference between the chair and boat form of cyclohexane is :

641) Addition of HI on double bond of propene yields isopropyl iodide as major product. It is because the
addition proceeds through :

642) The IUPAC name of neopentane is :

643) In Carius method of 0.099 g orgainc compound gave 0.287 g AgCl. The percentage of chlorine in the
compound will be

644) The most common type of reaction in aromatic compounds is

645) Arrange the following carbocations in order of stability
benzyl allyl methyl vinyl
I II III IV

646) The prefix name of —SH group in IUPAC system is :

647) Fractional distillation is a process by which the separation of different fractions from mixture of solution is
carried by making use of the following property of the fractions

648) Which of the following is an electroplile?

649) Which of the following is singlet carbine?

650) Which of the following is the correct order of priority of groups in D-glyceraldehyde?

651) o-hydroxytoluene and benzyl alcohol are :

652) Which of the following would react most readily with nucleophiles?

653) Which group has the highest + Inductive effect?

654) The Prussian blue colour obtained during the test of nitrogen by Lassaigne;s test is due to the formation of

655) Which of the following statements is correct?

656) Which of the following possesses an sp-hybridized carbon in its structure?

657) Di-chloroacetic acid is a stronger acid than acetic acid.
This due to occurrence of

658) In which of the following ways does the hydride ion tend to function?

659) The correct decreasing order of priority for the functional groups of organic compounds in the IUPAC
system of nomenclature is

660) Which of the following statements is incorrect?

661) For the purification, isolation and separation of organic compounds, the latest technique followed is

662) Arrange p-toluidine (I) N,N-dimethyl-p- toluidine (II) p- nitroaniline (III) and aniline (IV) in order of
decreasing basicity

663) The reagent showing addition on alkene against the Markownikoff’s rule of :

664) Carbocation can undergo :

665) Lactic acid is :

666) Of the following compounds which will have a zero dipole moment?

667) Isomerism exhibited by acetic acid and methyl formate is :

668) In IUPAC suffix name of —COX is :

669) Which one of the following compounds is most reactive towards nucleopilic addition?

670) Which of the following is the most stable cation?

671) Which of the following species is not electrophilic in nature?

672) The Beilstein test for organic compound is used to detect

673) Which of the following statements is not characteristic of free radical chain reaction?

674) The presence of carbon in an organic compound is detected by heating it with

675) Which one is an elimination reaction?

676) Identify the compound that exhibits tautomerism

677) Which of the following is an electrophile?

678) The formula of ethanenitrile is :

679) Which of the following acids shows stereoisomerism?

680) Mark the incorrect statement in nitrogen Kjeldahl's method of estimation

681) Which of the following orders is correct regarding the –I effect of the substituents?

682) The ease of dehydrohalogenation of alkyl halide with alcoholic KOH is

683) Lactic acid in which a methyl group, a hydroxyl group, a carboxylic acid group and a hydrogen atom are
attached to a central carbon atom shows optical isomerism due to the molecular geometry at the :

684) Which of the following process is suitable for the purification of aniline?

685) Maleic and fumaric acids are :

686) Which one is least reactive in a nucleophile substitution reaction?

687) Number of tertiary carbon atoms in tertiary butyl alcohol is :

688) The correct sequence of steps involved in the mechanism of Cannizzaro’s reaction is

689) Propanol and propanone are

690) Diastereomers can be separated by :

691) Angle strain in cyclopropane is

692) A mixture of acetone and methanol can be separated by

693) The oxygen atom in phenol

694) 2-methylpent-3-enoic acid shows :

695) Pyridine is :

696) The reason for the loss of optical activity of lactic acid when – OH group is changed by H is that

697) Which of the following compounds exhibits rotamers?

698) The correct order of nucleophilicity among the following is :

699) Ammonia molecule is :

700) 0.5 g of hydrocarbon gave 0.9 g water on combustion. The percentage of carbon hydrocarbon is

701) Which one of the following is most reactive towards electrophilic attack?

702) Identify, which of the below does not possess any element of symmetry?

703) Geometrical isomerism is shown by :

704) When thiourea is heated with metallic sodium, the compound which can't be formed is

705) The racemisation of optically active compounds is driven by :

706) The correct name for the following hydrocarbon is

707) Which of the following is the most stable radical?

708) The number of 4° carbon atoms in 2,2,4,4-tetramethylpentane :

709) Inductive effect involves

710) Compounds whose molecules are superimposable on their mirror images even though they contain
asymmetric carbon atoms or chiral centres are known as :

711) Percentage of hydrogen is maximum in .

712) Which of the following has most acidic hydrogen?

713) Ease of abstraction of hydrogen is greater when attached to :

714) Steam distillation is based on the fact that vaporisation of organic liquid takes place at

715) The hybridization of central carbon atom in 1,2- propadiene (allene) is

716) The kind of delocalisation involving sigma bond is called

717) In the case of homologous series of alkanes, which one of the following statements is incorrect?

718) Which of the following reagents will be fruitful for separating a mixture of nitrobenzene and aniline?

719) The name formic acid was given for HCOOH because it was prepared from :

720) 2, 3-dimethyl hexane contains ….. tertiary ….. secondary and ……primary carbon atmos, respectively

721) Which one of the following is the correct formula for dichlorodiphenyltrichloro ethane?

722) How many sigma and pi bonds are there in the molecule of di cyano ethane (CN - CH - CH - CN)?

723) Out of the following, the alkene that exhibits optical isomerism is

724) Carbanion can undergo :

725) Percentage composition of an organic compound is as follows
C=10.06, H=0.84, Cl=89.10
Which of the following corresponds to its molecular formula if the vapour density is 60.0?

726) Which of the following is most reactive towards nucleophilic substitution reaction?

727) Which among the following statements is correct with respect to the optical isomers?

728) Which of the following is most basic?

729) Which of the following compounds is not chiral?

730) What is the number of possible optical isomers in glucose?

731) In which reaction addition takes place according to Markownikoff’s rule?

732) Presence of halogen in organic compounds can be detected using

733) The bond energy for catenation next to carbon is :

734) The hydrolysis of alkyl halides by aqueous NaOH is best termed as :

735) Which of the following compounds exhibit stereoisomerism?

736) The + I.E(inductive effect) is shown by :

737) In paper chromatography

738) Which one of the following is not found in alkenes?

739) Select the correct statement :

740) A compound contains 2 dissimilar asymmetric carbon atoms. The number of optically active isomers is :

741) The inductive effect

742) If there is no rotation of plane polarised light by a compound in a specific solvent, though to be chiral, it
means that :

743) Formation of ethylene from acetylene is an example of

744) Which of the following is nucleophilic addition reaction?

745) The reagent used in dehalogenation process is :

746) Benzaldoxime exists in how many forms?

747) Resonance arises due to the :

748) Which one of the following pair represents stereoisomerism?

749) Stereoisomerism is of two types, geometrical and
optical.

750) Which of the following compounds is expected to be optically active?

751) Which of the following is least reactive in a nucleophilic substitution reaction?

752) During debromination of meso-dibromo-butane, the major compound formed is :

753) What is the empirical formula of a compound having 40% carbon, 6.66% hydrogen and 53.34% oxygen?

754) Which of the following can act as an nucleophile?

755) In Lassaigne’s test, a blue colour is obtained if the organic compound contains nitrogen. The blue colour is
due to

756) According to Gahn-Ingold-Prelog sequence rules, the correct order of priority for the given group is

757) How many chiral isomers can be drawn from 2-bromo, 3-chloro butane?

758) Glycerol can be separated from spent-lye in soap industry by

759) Correct gradation of basic charactor

760) An organic compound contains 49.3% carbon, 6.84% hydrogen and its vapour density is 73. Molecular
formula of compound is

761) Vital force theory of the origin of organic compounds was discarded by :

762) In the presence of peroxide, hydrogen chloride and hydrogen iodide do not give anti-Markownikoff
addition to alkenes because :

763) One is oxidizing and the other is reducing

764) Which of the following is the correct order of stability of different conformations of butane?

765) Glucose and fructose are :

766) Eelipsed and staggered forms of n-butane are called a pair of :

767) Arrange the following in order of increasing dipole moment (I) Toluene (II)m-dichlorobenzene (III) o-
dichlorobenzene (IV) p-dichlorobenzene :

768) In butane, which of the following forms has the lowest energy?

769) Molecular mass of a volatile substances may be obtained by

770) Which is not deflected by a non-uniform electrostatic field?

771) Correct order of nucleophilicity is

772) Due to the presence of an unpaired electron free radicals are

773) Which of the following will have meso isomers also?

774) The addition of HBr on butene-2 in presence of peroxide follow the:

775) Which represents nucleophilic aromatic substitution reaction?

776) Ethoxy ethane and methoxy propane are :

777) Which of the following aromatic acid is most acidic?

778) The hybridization of carbon in diamond, graphite and acetylene is in the order:

779) Which is optically active?

780) Which of the following statement is wrong?

781) What kind of isomerism is possible for 1-chloro-2-nitroethene?

782) Acetonitrile is

783) Formation of cyanohydrin from a ketone is an example of

784) An organic compound which produces a bluish green coloured flame on heating in presence of copper is

785) The compound abd C—C abd will exist in :

786) The C - H bond distance is longest in

787) The yield in organic reactions is generally poor because the reactions are :

788) Which of the following resonating structures of 1-methoxy-1, 3-butadiene is least stable?

789) A student named the compound as 1,4-butadiene :

790) The number of different substitution products possible when ethane is allowed to react with bromine is
sunlight are :

791) Phenol is more acidic than

792) During the fusion of an organic compound with sodium metal, nitrogen of the compound is converted into

793) The structure representing a heterocyclic compound is :

794) Which of the following reactions is an example of nucleophilic substitution reaction?

795) In which of the following species the central carbon atom is negatively charged?

796) Optically active compound among the following is :

797) Which of the following compounds will be most reactive towards nucleophilic addition reaction?

798) n-pentane and neopentane are :

799) The IUPAC name of acryldehyde is

800) Due to presence of an unpaired electron, free radicals are

801) 2-methylpent-3-ene is a chiral because it has :

802) Which of the following molecules contain asymmetric carbon atom?

803) Cyclobutane and butene-1 are :

804) Which of the following is not true for carbanions?

805) Which of the following structures permits cis-trans isomerism?

806) Which one of the following compound will show optical iosmerism?

807) The Kolbe’s electrolysis proceeds via

808) Which of the following statements is not correct?

809) Adsorbent is made of ... in TLC

810) The ammonia evolved from the treatment of 0.30 g of an organic compound for the estimation of nitrogen
was passed in 100 mL of 0.1 M sulphuric acid. The excess of acid required 20 mL of 0.5 M sodium
hydroxide solution for complete neutralization. the organic compound is

811) The structure remaining after one H is removed from hydrocarbon is :

812) Tautomerism is exhibited by

813) Which of the following statements is incorrect?

814) Base strength of,

815) Which of the following Fischer’s projection formula is identical to D-glyceraldehyde?

816) Among the following the dissociation constant is highest for

817) Which of the following is a dynamic isomerism?

818) Which among the following statements is correct with respect to the optical isomers?

819) Duma's method involves the determination of nitrogen content in the organic compound in the form of

820) n- pentane and 2-methyl butane are a pair of

821) Amongst the following the compound that can most readily get sulphonated is

822) In E2 elimination, some compounds follow Hofmann’s rule which means:

823) How many asymmetric carbon atoms are present in
(i) 1, 2-dimethylcyclohexane
(ii) 3-methylcyclopentane and
(iii) 3-methylcyclohexene?

824) Which of the following is a chiral compound?

825) The maximum number of possible optical isomers in 1-bromo-2-methyl cyclobutane is

826) Vinyl alcohol and acetaldehyde are :

827) Stereoisomers (geometrical or opticals) which are neither superimposable nor mirror image to each other
are called :

828) Which one of the following will show optical isomerism?

829) Chloroacetic acid is a stronger acid than acetic acid. This can be explained using

830) The basicity of aniline is less than that of cyclohexylamine. This is due to

831) Dehydration of alcohol usually goes by

832) Geometrical isomerism is possible in

833) The maximum number of possible optical isomers in 1-bromo-2-methyl cyclobutane is

834) Ethers are isomeric with

835) Vinyl chloride undergoes

836) Fischer projection indicates :

837) Acetone and propen-2-ol are :

838) The number of stereoisomers obtained by bromination of trans - 2 -butene is?

839) The compound which forms one monochloro product when treated with chlorine is :

840) Maleic acid and fumaric acid are

841) Which represents the condensed formula for pentanes?

842) Which of the substance is purified by sublimation?

843) The halogen compound which most readily undergoes nucleophilic substitutions is

844) Which of the following order is correct regarding the acidity of carboxylic acids?

845) Reaction of methyl bromide with aqueous sodium hydroxide involves

846) The following compound will undergo electrophilic substitution more readily than benzene

847) Which of the following elements can't be detected by direct tests?

848) Position isomerism is shown by :

849) Formulae of phenyl carbinol and chloral are respectively :

850) The reaction of sodium ethoxide with iodoethane to from diethyl is termed as

851) The sodium extract of an organic compound on acidification with acetic acid and addition of lead acetate
solution gives a black precipitate. The organic compound contains

852) The silver salt of a monobasic acid on ignition gave 60% of Ag. The molecular weight of the acid is

853) The resonating structures :

854) How many optically active stereoisomers are possible for butane-2, 3-diol?

855) Removal of a hydride ion from a methane molecule will give a:

856) Which of the following will have a meso-isomer also?

857) Which chlorine atom is more electronegative in the following?

858) The resonating structures :

859) The optical isomers, which are not enantiomers, are called

860) Which of the following orders is correct regarding the acidity of carboxylic group?

861) Geometrical isomerism is shown by

862) Which one of the following is s-butyl phynylvinyl methane?

863) Bicyclo (1,1,0) butane is

864) The reaction of sodium ethoxide with iodoethane to from diethyl is termed as

865) Which of the following is most reactive towards elimination reaction?

866) The number of isomeric hexanes is

867) The substitution reaction among the following is

868) The most stable carbocation is

869) Which of the following statements is not correct?

870) How many chiral carbon atoms are present in 2, 3, 4- trichloropentane?

871) Which one of the following compounds is most polar?

872) Geometrical isomerism is not shown by

873) The change in optical rotation with time of freshly prepared solution of sugar is known as:

874) Which of the following does not show stereo isomerism?

875) One of the following compounds exhibit geometrical iosmerism

876) Which one of the following shows functional isomerism?

877) In the reaction of phenol with chloroform and aqueous solution of NaOH at 70°C, the electrophile attacking
the ring is

878) The production of an optically active compound from a symmetric molecule without resolution in termed
as :

879) Which of the following statement is not applicable to Beilstein test?

880) Essential oils can be isolated by

881) Mesomeric effect involves delocalisation of

882) Which of the following species is paramagnetic in nature?

883) Isobutyl chloride is :

884) Which one of the following compounds is capable of existing in a meso form?

885) Geometrical isomerism is caused :

886) Lassaigne's test is used for the detection of

887) Which of the following is arranged according to the nature indicated?

888) Example of geometrical isomerism is

889) Which of the following is an example of elimination reaction?

890) Which nomenclature in IUPAC is not correct?

891) The C—C bond angle in cyclopropane is :

892) Absolute alcohol cannot be obtained by simple fractional distillation because

893) Racemic compound has

894) In case of a homologous series each member differs from the preceding or the succeeding member by :

895) Vaccum distillation is used to purify liquids which

896) Which of the following is the weakest base?

897) The structure which has positive charge on the oxygen atom :

898) Statement 1: Lessaigne's test is the for nitrogen only
Statement 2: If halogens are present in organic compound, it react with sodium to form sodium halides
which dissolves in water

899) Statement 1: Benzoic acid is purified by sublimation process
Statement 2: Sublimation process is very useful in separating a volatile solid from a non-volatile solid

900) Statement 1: The molality of the solution does not change with change in temperature.
Statement 2: The molality of the solution is expressed in units of moles per 1000 g of solvent.

901) Statement 1: ‘A Victor Mayer tube’ of hard glass, having a side-tube, leading to the arrangement for
collection of displaced air over water.
Statement 2: An outer jacket of copper, containing a liquid boiling at nearly 30℃ higher than the
substance whose molecular mass is to be determined

902) Statement 1: Normally and molarity can be calculated from each other.
Statement 2: Normally is equal to the product of molarity and n.

903) Statement 1: Carbanion like ammonia have pyramidal shape
Statement 2: The carbon atom carrying negative charge has an octet of electrons