Practice Test


1) If the two chlorine atoms are attached to the same carbon atom of an alkane, it is termed as


2) Wurtz synthesis is carried out by treating


3) Darzen's reaction is


4) The product of reaction of alcoholic silver nitrite with ethyl bromide is


5) When chloroform is exposed to light and damp air, it gives (among other products)


6) Chloroform on heating with silver powder gives


7) If methyl bromide and ethyl bromide are mixed in equal proportion and the mixture is treated with sodium, the number of possible organic products is


8) 1 - Chlorobutane on reaction with alcoholic KOH gives


9) The typical reaction of alkyl halide is:


10) Which of the following compounds is least reactive?


11) For a given halogen atom, the reactivity is maximum for


12) The most reactive alkyl halide is


13) D.D.T is prepared by heating chlorobenzene with


14) When iodobenzene is heated with copper powder in a sealed tube, it gives


15) Picric acid is


16) Under the influence of air and light, chloroform decomposes into


17) Benzyl chloride on oxidation with copper nitrate gives


18) A chloroderivative 'X' on treatment with zinc and hydrochloric acid gave a hydrocarbon with five carbon atoms in the molecule. When X is dissolved in ether and treated with sodium, 2, 2, 5, 5 - tetramethyl hexane is obtained. The compound X is


19) Iodoethane is treated with alcoholic KCN and the product obtained is hydrolysed with dil. HCl. The final product is


20) When ethylamine is heated with chloroform and alcoholic KOH, a compound with offensive smell is formed. This compound is


21) Carbon tetrachloride is used in fire extinguishers under the name of


22) 1 - Phenyl - 2 - chloropropane when treated with alcoholic potash gives mainly


23) B.H.C. is used as a pesticide in agriculture under the trade name


24) Alkyl halides on treatment with aqueous KOH give


25) Chloroform condenses with acetone to form a compound which is used as


26) On heating ethylene dichloride with alcoholic potash, the product formed is


27) Pure sample of chloroform can be prepared by distilling chloral with concentrated aqueous solution of


28) Which of the following does not give iodoform test?


29) The major product obtained when 2 - bromobutane is heated with alcoholic KOH is


30) Chloroform reacts with phenol and sodium hydroxide to give


31) Ethyl bromide reacts with silver cyanide to give


32) A sample of chloroform before being used as an anesthetic is tested by


33) Chloroform on reduction with zinc and HCl produces


34) Chlorobenzene can be prepared by reacting aniline with


35) The reaction involving the treatment of benzene diazonium chloride with copper powder and HCl is known as


36) Fluorobenzene is prepared by treating benzene diazonium chloride with fluoroboric acid and heating the product obtained. This reaction is known as


37) The reaction of an aromatic halogen compound and an alkyyl halide in the presence of sodium and dry ether is known as


38) The silver salt of a fatty acid refluxing with an alkyl halide gives


39) When chloroform is hydrolysed with aqueous potassium hydroxide, it forms


40) 1 - Chlorobutane on reaction with alcoholic potash gives


41) Methyl bromide reacts with silver acetate to give


42) In Wurtz synthesis, the reactivity of alkyl halides with sodium metal follows the order


43) Chloroform easily gets converted to poisonous phosgene in the presence if air and sunlight. Which of the following substances is added to prevent the formation of phosgene?


44) Chlorination of toluene in the presence of sunlight gives


45) Which of the following processes does not occur during the formation of chloroform from ethyl alcohol and bleaching powder?


46) Iodoform test is gives by


47) Chlorobenzene is commercially prepared by


48) Ethylidene chloride and ethylene chloride are isomeric compounds. Which of the following statements is not true about these?


49) On heating ethyl bromide with an alloy of leadsodium gives


50) Chlorobenzene on reduction with Na/Al alloy and alcohol gives


51) Aryl halides are less reactive than alkyl halides towards nucleophilic substitution reactions because of


52) Which of the following with aqueous KOH gives acetaldehyde?


53) A mixture of 1 - chloropropane and 2 -chloropropane when treated with alcoholic KOH gives


54) The densitis of alkyl halides follow the order


55) Benzyl chloride reacts with chlorobenzene in the presence of dry ether to give


56) Carbylamine test is performed on alcoholic KOH by heating a mixture of


57) Which of the following alkyl halides undergoes elimination reaction readily?


58) Which of the following with aqueous KOH give ethanal?


59) Which of the following statements is not correct?


60) Chlorination of toluene in the presence of light and heat followed by treatment with aqueous sodium hydroxide gives


61) 1 - Phenyl -2 - chloropropane when treated with alc. KOH gives mainly


62) Benzene hexachloride is used as


63) The reaction of tert. Butyl bromide with sodium methoxide produces mainly


64) Iodoform is formed when ethanol is heated with


65) When aniline is heated with chloroform and alcoholic KOH, a foul smelling product is formed. It is


66) Iodoform reaction is positive for


67) Iodoethane reacts with sodium in ether and the product is


68) Which of the following compounds on oxidation gives benzoic acid?


69) The reaction of t - butyl chloride and sodium ethoxide gives mainly


70) Aerial oxidation of chloroform in sunlight to phosgene is checked by


71) 1, 3 - Dibromopropane reacts with metallic zinc to form


72) Which of the following can take part in nucleophilic and also in electrophilic substitution reactions?


73) Which of the following is an organometallic compounds?


74) Chloroform on a commercial scale can be prepared by distilling acetone with


75) Which is the correct method for the preparation of 2 - bromo propane?


76) Which of the following methods will give allyl chloride?


77) Phosgene is a common name for


78) When chlorobenzene is heated with conc. NaOH solution at about 575 K under high pressure, the product is


79) The compound ethylisocyanide is prepared by the reaction between


80) Which of the following has maximum melting point?


81) When isopropyl iodide is treated with methyl iodide in the presence of sodium, the product is:


82) Which of the following reagents cannot be used to prepare an alkyl halide from an alcohol?


83) Westrosol is a commercial solvent used for oils, paints, varnishes etc. It is obtained from


84) Which of the following is also known as pyrene?


85) Which of the following will have maximum boiling point?


86) Gammexane is the name given to


87) Chloretone is obtained by reacting chloroform with


88) Carbon atom holding halogen in aryl halides is


89) Which of the following is a gem dihalide?


90) Westrosol has the formula


91) The most suitable reagents required to prepare iodobutane from 1 - butene are:


92) Thioalcohols are prepared by treating alkyl halides with


93) Methylene chloride on hydrolysis gives


94) Which of the following is least reactive towards nucleophilic substitution reaction?


95) Slow oxidation of chloroform in air leads to the formation of


96) For converting aniline into chlorobenzene which of the following reagent is not used?


97) Which of the following will react with water?


98) A positive carbylamine test is given by


99) Ethyl bromide can be obtained by the action of HBr on


100) In the Reimer Tiemann reaction, the electrophile is


101) How many enantiomeric pairs can be obtained by monobromination of isopentane?


102) Among the following compounds, which one has the least percentage of chlorine?


103) A dihalogen derivative (X) of a hydrocarbone containing three carbon atom, reacts with alc. KOH giving another hybrocarbon which gives red precipitates with ammoniacal CuCl, 'X' gives an aldehyde when treated with aqueous KOH. The compound X is


104) What mass of propene is formed from 34.0 g of iodopropane on heating with ethanolic KOH, if the yield is 36%?


105) The conversion of 2, 3 - dibromobutane to 2 - butene with zinc and alcohol is


106) Which of the following compounds will not give positive iodoform test?


107) The correct order of increasing boiling points for I: Pentan - 1 ol, II; butan - 2 - ol, III ; Propan -1 - ol, IV ; butan - 1 - ol is


108) Which of the following has highest nucleophilicity?


109) In the presence of peroxide, hydrogen chloride and hydrogen iodide do not give anti Markovnikov addition to alkenes because


110) The most reactive nucleophile among the following is


111) Among the following the molecule with the highest dipole moment is


112) Which of the following compounds is not chiral?


113) Alkyl halides react with lithium dialkyl copper reagents to give


114) How many monochlorobutanes will be possible on chlorination of n - butane?


115) Tetrabromoethane on treatment with alcoholic zinc gives


116) Isopropyl chloride undergoes hydrolysis by


117) A compound that will form an offensive smell when heated with chloroform and alcoholic potash is:


118) On warming with silver powder, chloroform is converted into


119) The compound pyrene used in fire extinguishers is:


120) Which of the following is a secondary alkyl halide?


121) The reactivity order of halides for dehydrohalogenation is


122) Benzene hexachloride has a trade name


123) Aniline, chloroform and alcoholic KOH react to produce a bad smelling substance, which is


124) Allyl chloride on dehydrochlorination gives


125) Which of the following are arranged in the decreasing order of dipole moment?


126) Chloropicrin is obtained by the reaction of


127) Among the following the most reactive towards alcoholic KOH is:


128) 1, 2 - Dibromoethane when heated with alcoholic potash gives:


129) An alkyl halide produces a single alkene when it reacts with sodium ethoxide and ethanol. This alkene undergoes hydrogenation and produces 2 - methyl butane. What is the identity of the alkyl bromide?


130) Which of the following is liquid at room temperature


131) The raw materials for the commercial manufacture of DDT are


132) 1 - Phenyl - 2- chloropane on treatment with alcoholic KOH gives mainly


133) Which of the following compound has the highest boiling point?


134) Which of thefollowing reactions is an example of nucelophilic substitution reaction?


135) Methyl bromide reacts with AgF to give methyl fluoride and AgBr. This reaction is called


136) Which of the following is the least reactive towards nucleophile?


137) The major product obtained when 2 - bromobutane is heated with alcoholoc KOH is


138) Under the influence of air and light, chloroform decomposes into


139) When iodobenzene is heated with copper powder in a sealed tube, it gives


140) Chlorination of toluene in the presence of light and heat followed by treatment with aqueous sodium hydroxide gives


141) 1, 3 - Dibromopropane reacts with metallic zinc to form


142) Chloropicrin is obtained by the reaction of


143) In the Reimer Tiemann reaction, the electrophile is


144) The most suitable reagents required to prepare iodobutane from 1 - butene are:


145) Iodoform test given by


146) Which of the following compounds is least reactive?


147) Which of the following reagent is used in Grove's process for the preparation of alkyl halide from secondary alcohols?


148) Which of the following is used as a methylating agent?


149) Which compound would be obtained as the major product on refluxing 2 - chloro - 2 - methyl butane with alcoholic KOH solution?


150) In which of the following compounds, Cl is not easily replaced?


151) Which of the following reactions is an example of Wurtz reaction?


152) Which of the following alkyl halides is isopropyl chloride?


153) Silver benzoate will react with bromine in acetone to form


154) Propyl benzene reacts with bromine in the presence of light and heat to give.


155) Which of the following has highest boiling point?


156) What would be the product formed when 1 - bromo - 3 - chloro cyclobutane reacts with two equivalents of metallic sodium in ether?


157) Which of the following is a free radical substitution reaction?


158) Which one is a nucleophilic substitution reaction among the following?


159) Which of the following is the correct structure of D.D.T ?


160) Which of the following is an example of allylic halide?


161) Which of the following chloro derivatives of benzene would undergo hydrolysis most readily with aqueous KOH to give the corresponding hydroxy derivative?


162) Which of the following is an example of Sandmeyer's reaction?


163) Which of the following would undergo hydrolysis most readily with aqueous NaOH to form corresponding hydroxy derivatives?


164) Which of the following compound can be hydrolysed very readily?