Practice Test

1) Which is an ore of potassium ?

2) Which of the following is radioactive ?

3) Alkali metals impart color to Bunsen flame due to

4) Which one of the following properties of alkali metals increase in magnitude as the atomic number rises ?

5) The process associated with sodium carbonate manufacture is known as

6) Compared with the alkaline earth metals, the alkali metals exhibit

7) Strongest bond is between

8) Molten sodium chloride conducts electricity due to the presence of

9) Microcosmic salt is

10) Which of the following has lowest thermal stability?

11) Sodium reacts with water more vigorously than lithium because

12) Which of the following properties is not true for an alkali metal ?

13) Sodium chloride imparts golden yellow color to the Bunsen flame. This can be interpreted due to

14) Which of the following compound is used in gun powder ?

15) Which of the following statement is false regarding saline hydrides ?

16) With the increasing in atomic weights, melting points of the alkali metals

17) Which of the following statement is incorrect ?

18) Which one of the following has highest electropositive character ?

19) Which of the following has highest melting point?

20) Which of the following electronic configurations corresponds to an element with lowest ionization energy ?

21) Alkali metal that react with nitrogen directly to form nitride is

22) oxone is

23) Which of the following has lowest melting point ?

24) On dissolving moderate amount of sodium metal in liquid ammonia at low temperature, which one of the following does not occur

25) Photoelectric effect is maximum in

26) Backing soda is

27) Which of the following ions forms a hydroxide highly soluble in water ?

28) Which of the following carbonate decompose on heating ?

29) Which of the following are arranged in correct increasing order of solubilities ?

30) When sodium chloride is dissolved in water, sodium ion is

31) Which of the following atoms will have the smallest size?

32) Which of the following compounds has the lowest anion to cation size ration ?

33) The properties of lithium are similar to those of Mg. This is because

34) A solution of sodium metal in liquid ammonia is strongly reducing due to the presence of

35) Salt used for performing bead test in qualitative inorganic analysis is

36) The chloride of an element A gives a neutral solution in water. In the periodic table, the element A belongs to

37) Which of the following has largest size ?

38) Which of the following statement is false for alkali metals?

39) A combustible gas is liberated when caustic soda solution is heated with

40) Caesium oxide will be

41) Lithium shows diagonal relationship with

42) In certain respects, lithium differs from other alkali metals.The main reason for this is

43) When a substance A reacts with water it produces combustible gas B and a solution C in water.When another substance D reacts with this solution of C,it also produces the same gas B even on reaction with dilute sulphric acid at room temperature. A imparts a deep golden yellow color to a smokeless flame of Bunsen burner.A,B.C and D respectively are

44) Anhydrous mixture of KF and HF contains which type of ions?

45) The increasing order of atomic radius for the element Na, Rb,K and Mg is

46) In organic reactions, sodium in liquid ammonia is used as......

47) When sodium is treated with sufficient oxygen/air, the product obtained is

48) Which of the following is monovalent ?

49) When washing soda is heated

50) Potassium is kept in

51) Chile saltpetre is

52) sodium metal cannot be stored under

53) Which is manufactured by electrolysis of fused NaCl?

54) Caustizisation process is used for the preparation of

55) Baking powder Has one of the following constituents

56) Which one of the following has minimum value of cation/anion ratio ?

57) The following are some of the methods commonly employed for the extraction of metal from their ores. Which of the following methods is generally employed for the extraction of sodium ?

58) In Solvay ammonia process, sodium bicarbonate is precipitated due to

59) Which compound will show the highest lattice energy?

60) The reactivity of the alkali metal sodium with water, is made use of

61) The alkali metals

62) Identify the correct statement

63) The Stability of the following alkali metal chlorides follows the order

64) Which of the following reacts with water at high rate

65) When NaOH is made, the gas released at the cathod is

66) Which of the following reactions is not associated with the Solvay process of manufacture of sodium carbonate

67) In view of their low ionization energies, the alakali metals are

68) Aqueous NaCl solution is electrolyzed using platinum electrodes. What is the product formed at cathode?

69) Super oxide of potassium is

70) NaOH is prepared by the method

71) Which of the following is correct ?

72) The formula of nitre is

73) Which causes nerve signals in animals?

74) Select correct statement

75) The alkali metals readily dissolve in liquid ammonia to give solution which are blue in color, if dilute. The blue color is believed to be due to

76) Select correct statement

77) Which of the following alkali metal hydroxides is the strongest base ?

78) Which of the following oxides is formed when potassium metal is burnt excess air ?

79) Sodium conduct electricity because

80) The strongest reducing agent out of Na, K, Rb and Cs is

81) Alkali metals are generally extracted by

82) Which one of these is basic ?

83) Which one of these is most reactive ?

84) Which one of the elements reacts directly with nitrogen to form nitride ?

85) Which of the following is known as fusion mixture ?

86) Which of the following has the highest solubility product ?

87) Which is the weakest reducing agent ?

88) Which of the following sets can be called isoelectronic species ?

89) Alkali metal display hydrogen from water forming bases due to the reason that

90) Which of the following has the highest conductivity ?

91) Crystalline sodium chloride is bad conductor of electricity because

92) Which of the following does not illustrate the ammonia properties of Li?

93) The valence shell electronic configuration of alkali metals is

94) Which of the following has the least ionization potential ?

95) An aqueous solution of sodium carbonate is alkaline because sodium carbonate is a salt carbonate is a salt of

96) Which of the following is a man made element ?

97) Fires that result from the combustion of alkali metals can be extinguish by

98) On heating sodium metal in a current of dry ammonia, the compound formed is

99) Which of the following alkali metal ions has lowest ionic mobility in aqueous solution ?

100) Which one of the following metallic hydroxides does not dissolve hydroxide solution ?

101) Smallest among these species is

102) How does the ionization energy of first group elements vary ?

103) The ionic conductance of following cation in a given concentration is in the order

104) Lithium is strong reducing agent among alkali metals due to which of the following factor ?

105) Nitrogen dioxide cannot be prepared by heating

106) Molecular formula of Glauber's salt is

107) The pair of compound which cannot exist together in solution is

108) The metallic luster exhibited by solution is explained by

109) An aqueous solution of sodium sulphate is electrolysed using inert electrodes. The products at the cathode and anode are respectively

110) Sodium Sulphate is soluble in water but barium sulphate is sparing soluble because

111) A fire of lithium, sodium and potassium can be extinguished by

112) On strong heating sodium bicarbonate changes into

113) Which of the following acts as an oxidising as well as reducing agent ?

114) Among alkali metal salts, the lithium salts are the poorest conductor of electricity in aqueous solution because of

115) Brine solution on electrolysis will not give

116) The ionic mobility of alkali metal ions in aqueous solution is maximum for

117) The compound(s) formed upon combustion of sodium metal in excess air is(are)

118) Which one of the alkaline earth metals shows some anomalous behaviour and has the same electronegativity as aluminium?

119) Which of the following carbonates decomposes on heating ?

120) Magnesium keeps on burning in

121) Which of the following are arranged in correct increasing order of solubilities ?

122) Which of the following is different from the other three oxides ?

123) Which of the following has highest electrode potential ?

124) Which of the following is true for magnesium ?

125) Which of the following has correct increasing basic strength ?

126) The most electropositive among the alkaline earth metals is

127) The descending order of the second ionization potential of Mg, Ca, and Ba is

128) All the following substance react with water. The pair that gives the same gaseous product is

129) Among the following oxides, the one which is most basic is

130) A metal salt solution forms a yellow precipitate with potassium chromate in acetic acid, a white precipitate with dilute sulphuric acid but gave no precipitate with sodium chloride or iodide. The white precipitate obtain when sodium carbonate is added to the salt solution will consist of

131) Which of the alkaline earth metals is the strongest reducing agent?

132) White enamel of our teeth contain

133) The correct order of increasing ionic character is

134) The first ionization potential (eV) of Be and Ba respectively are

135) The compound of alkaline earth metal have the following magnetic nature

136) Mg is an important component of which biomolecule occurring extensively in living world ?

137) Which of the following has maximum ionization energy?

138) As the alkaline earth metals (except Be) tend to lose their valence electron readily, they act as

139) Which is insoluble in water?

140) Thermal stability of alkaline earth metal carbonates decrease in the order

141) Which one of the following statement is correct for alkaline earth metals?

142) The alkaline earth metals Ba, Sr, Ca and Mg may be arranged in the order of their decreasing first ionisation potential as

143) Melting point of calcium halides decrease in the order

144) Which of the following will liberate hydrogen by its reaction with hydrochloric acid ?

145) Which of the following statement is false ?

146) The solubility of sulphates in water, down the B e group is Be > Mg > Ca > Sr > Ba. This is due to

147) Metals belonging to the same group in the periodic table are

148) The number of covalent bonds formed by beryllium is

149) A major constituent of portland cement (except lime) is

150) Setting of cement is an

151) Which of the following is commonly used in a laboratory dessicator ?

152) The wire of flash bulb is made up of

153) In India at he occasion of marriages, the fire works give green flame. which one of the following radical may be present ?

154) Plaster of Pairs hardens by

155) Epsom salt is the hydrate of one of the following

156) Which of the following substance is used in the laboratory for fast drying of neutral gases ?

157) Which of the following metal ions plays an important role in muscle contraction ?

158) Presence of which of the following salts increase the rate of setting of plaster of Paris ?

159) Identify the correct statement

160) Calcium is obtained by the

161) The difference of water molecules in gypsum and plaster of Paris is

162) Plaster of Paris is used

163) On heating quick lime with coke in an electric furnace, we get

164) Initial setting of cement is mainly due to

165) As the nuclear increase from neon to calcium, the orbital energies

166) Carnallite on electrolysis give

167) Setting of plaster of Paris involves

168) Out of the following elements which one do you expect to be most reactive chemically?

169) Portland cement is manufactured by using

170) Which of the following sulphates has higher solubility in water?

171) The chemical composition of plaster of Paris is

172) Which of the following compound of cement sets at the slowest rate ?

173) Melting point is lowest for

174) Which of the following imparts brick red colour to the flame ?

175) Magnesium can be obtained by

176) Which of the following is the strongest base ?

177) Limestone is not used in which of the following manufacturing processes ?

178) Blanc fire used in paints is

179) The formula of calcium cyanamide is

180) A firework gives out crimson colored light. It contains a salt of

181) The carbide of which of the following metals on hydrolysis given allylene or propyne ?

182) Which of the following show high tendency to form a peroxide?

183) Which of the following has the lowest melting point ?

184) Which of the following on thermal decomposition yield a basic as well as an acidic oxide ?

185) From which mineral Ra is obtained

186) Salt used as a purgative is

187) Ra is placed at the bottom of alkaline earth metals. The element should

188) Mortar is mixture of

189) Which alkaline earth metal nitride is volatile?

190) Which chloride is covalent and soluble in ether?

191) Celestite is an ore of

192) Gypsum is added to clinker during cement manufacture to

193) Which ion forms hydroxide easily soluble in water?

194) Beryllium shows diagonal relationship with aluminium. Which of the following similarity is incorrect ?

195) Barium is extracted from its ore

196) Which alkaline earth metal forms complex salts ?

197) In order to differentiate between the metals A and B, it has been observed that both oxide but B also forms nitride, When both burn in air. So A and B are

198) Among the metals Be, Mg, Ca and Sr of group 2(or group IIA) of the periodic table, the least ionic chloride would be formed by

199) Which of the following salts does not impart a color to the flame ?

200) Which of the following is least soluble in water ?

201) Dolomite has the Composition

202) Alkaline earth metals form ions of the general formula

203) The one which does not show variable valency is

204) The Characteristic outer electronic configuration of alkaline earth metals is

205) Which one is not dissolved by dilute hydrochloric acid is

206) A chloride dissolved appreciably in cold water. when placed on a Pt wire in Bunsen flame, no distinctive color is noted which cation could be present ?

207) The right order of solubility of sulphates of alkaline earth metals in water is

208) The first ionization energies of alkaline earth metals are higher than those of the alkali metals. This is because

209) Among the alkaline earth metals, the element forming predominantly covalent compound is

210) Which of the following is incorrect?

211) In curing cement plaster, water is sprinkled from time to time. This helps in

212) Several blocks of magnesium are fixed to the bottom of a ship to

213) The solubility of carbonates decrease down the magnesium group due to decrease in

214) The compound insoluble in acetic acid is

215) Property of the alkaline earth metals that increase with their atomic number is

216) The set representing the correct order of first ionization potential is

217) Which of the following process is used in the extractive metallurgy magnesium ?

218) For two ionic solids CaO and KI, Identify the wrong statement among the following ?

219) The number and type of bonds between two carbon atoms in calcium carbide are

220) When chlorine is passed through concentrated solution of KOH, the compound formed is:

221) Which of the following does not illustrate the anomalous properties of lithium?

222) Statement 1 : Gypsum is added to cement to increase its rate of setting.
Statement 2 : Gypsum is calcium sulphate hemihydrates.

223) A white solid reacts with dil. HCl to give colourless gas that decolourises aqueous bromine. The solid is most likely to be:

224) Statement 1 : Radium is most abundant s block elements.
Statement 2 : S block elements are non radioactive in nature.

225) Out of the following metals that cannot be obtained by electrolysis of the aqueous solution of is salts is

226) Statement 1 : Group 1 elements are known as the alkali elements.
Statement 2 : S orbital can accommodate only two electrons.

227) The correct increasing covalent character is:

228) Statement 1 : S block elements are highly electropositive.
Statement 2 : The valance electrons present in s orbital are loosely held.

229) Portland cement has ….in its composition:

230) The reaction of sodium with water is highly exothermic. The rate of reaction is lowered by:

231) Which of the following carbonates decomposes at lowest temperature?

232) Which out of the following compounds is called photographer's fixer?

233) The metal present in Grignard reagent is:

234) The characteristic not related to alkali metal is

235) A colourless salt gives violet colour to Bunsen flame and also turns moisture litmus paper blue. It is:

236) Which possesses highest lattice energy?

237) Hypo is used in:

238) Which of the following has the largest size in aqueous solution?

239) On prolonged exposure to air, sodium finally changes to:

240) Which of the following is an epsom salt?

241) Which of the following statements are correct for alkali metal compounds?
(i) Superoxides are paramagnetic in nature.
(ii) The basic strength of hydroxides increases down the group.
(iii) The conductivity of chlorides in their aqueous solutions decreases down the group.
(iv) The basic nature of carbonates in aqueous solutions is due to cationic hydrolysis.

242) Flash bulbs contain wire or foil of Mg packed in an atmosphere of:

243) The main product obtained when a solution of sodium carbonate reacts with mercuric chloride is

244) Which on mixing with water gives a hissing sound and becomes very hard?

245) Milk of magnesia is:

246) What would you observe if excess of dilute NaOH solution is added and shaken with an aqueous solution of aluminium chloride?

247) Molecular formula of Glauber's salt is

248) Ca on exposure in moist air forms a layer on surface of:

249) Which of the following is different from the other three?

250) Dead burnt is:

251) Salt used as a purgative is:

252) Tin dissolves in boiling caustic soda solution because of the formation of soluble:

253) Alkali metals contain:

254) The wire of flash bulbs are made up of:

255) Addition of excess of sodium hydroxide solution to a solution of nickel sulphate results in the formation of a:

256) Several blocks of Mg are fixed to the bottom of a ship to:

257) Sodium sulphate is soluble in water whereas barium sulphate is sparingly soluble because:

258) Baking soda is:

259) NaCl crystals possesses:

260) The carbonate that will not decompose on heating is

261) Which statement is false for alkali metals?

262) When washing soda is heated

263) Most abundant salt of sodium in nature is:

264) Which one of the following substances is used in the laboratory for a fast drying of neutral gases?

265) Which alkaline earth metal forms peroxide on burning in air?

266) Sodium metabisulphite is not:

267) In the manufacture of sodium hydroxide, byproduct obtained is:

268) Which of the following substances is used in the laboratory for fast drying of neutral gases?

269) Alkaline earth metal oxide having the co-ordination number four is:

270) Sodium thiosulphate is a

271) What are the products formed when an aqueous solution of magnesium bicarbonate is boiled?

272) Alkaline earth metal salts are:

273) Molten NaCl conducts electricity due to the presence of:

274) The oxide of which metal is most stable to heat?

275) A solution of sodium thiosulphate on addition of few drops of ferric chloride gives violet colour due to the formation of

276) Alkali metals are characterised by:

277) Which has lowest thermal stability?

278) When NaCl is dissolved in water, the sodium ions become:

279) In which of the following, sodium carbonate is not used?

280) The difference of water molecules in gypsum and plaster of Paris is

281) Alkaline earth metals are not found free in nature because of their:

282) A radioactive element X decays giving two inert gases is:

283) The principal products obtained on heating iodine with concentrated caustic soda solution are:

284) The chloride ion is isoelectronic with potassium. The size of chloride ion is:

285) Which of the alkali metal chloride is expected to have highest m.p.?

286) On heating sodium metal in a current of dry ammonia gas the compound formed is:

287) NaOCl is used as a bleaching agent and sterilising agent. It can be synthesised by the action of

288) Most powerful reducing agent is

289) The compound insoluble in acetic acid is:

290) The ionic conductance is least for

291) Sodium carbonate contains:

292) A sudden large jump between the values of second and third ionization energies of an element would be associated with the electronic configuration:

293) Which of the following reacts with water with high rate?

294) Beryl is:

295) Sodium chloride is known as:

296) Soda lime is

297) Lithopone is a mixture of:

298) Which of the following is not known?

299) Alkali metal chloride soluble in pyridine is:

300) The characteristic colours given by calcium, strontium and barium in the flame test are respectively

301) The first ionization energies of alkaline earth metals are higher than those of the alkali metals. This is because:

302) NaOH is prepared by the method:

303) Sodium thiosulphate is formed when:

304) Commonly used laboratory desiccant is:

305) An aqueous solution of KI does not give a precipitate with:

306) Both Be and Al become passive on reaction with conc. Nitric acid due to:

307) Sodium peroxide which is a yellow solid, when exposed to air becomes white due to the formation of

308) The metal, that is extracted from sea water is:

309) Sedimentary rocks laid down under water mainly contain:

310) The salts of which alkaline earth metal are used in the form of manure?

311) Potash alum is used in purification of water because:

312) Which has maximum electropositive character?

313) The main constituent of bones is:

314) Which one of the following reactions occur at the anode, in the Castner process of extracting sodium metal?

315) Mortar is a mixture of:

316) Sodium cannot be extracted by the electrolysis of brine solution because:

317) Calcium is obtained by

318) The function of sand in mortar is:

319) The most homogeneous family in periodic table is of:

320) Which is most basic in character?

321) On strong heating sodium bicarbonate changes into

322) Mg keeps on burning in:

323) Baking soda or baking powder is:

324) Fusion mixture is comprised of:

325) The most basic oxide among the following is:

326) Which of the following will liberate hydrogen by its reaction with hydrochloric acid?

327) Bleaching powder is obtained by treating chlorine with

328) Baking powder contains

329) Siedlitz powder contains:

330) Sodium bicarbonate is manufactured by:

331) In the hardening stage of plaster of Paris, the compound formed is

332) Sodium reacts with water more vigorously than lithium because it:

333) Magnesium has polarising power closer to that of:

334) Calcium does not combine directly with:

335) A fire of lithium, sodium and potassium can be extinguished by

336) The alkali metals:

337) Alkali metals are soft and have relatively low m.p. and low density. This is because:

338) The starting material used in Solvay's process are

339) The process associated with sodium carbonate manufacture is known as ….process.

340) In Down's method for the extraction of sodium, the melting point of the electrolyte is lowered by adding

341) Thomas slag is

342) In the alkaline earth metals, the element forming predominantly covalent compound is

343) The formula of Norwegian saltpetre is:

344) Calcium is extracted by the electrolysis of:

345) The right order of the solubility of sulphates of alkaline earth metals in water is

346) Lithium is the only alkali metal which is not placed in kerosene but is wrapped in paraffin wax, because:

347) Out of following which compound is used for preservation of wood?

348) When sulphur is heated with NaOH (aq) the compounds formed are:

349) In certain matters, lithium differs from other alkali metals, the main reason for this is:

350) An ore of potassium is:

351) Order of increasing density is

352) The highly efficient method of obtaining beryllium is:

353) In curing cement plasters water is sprinkled from time to time. This helps in

354) Which decomposes on heating?

355) The solubility of silver bromide in hypo solution due to the formation of

356) Ionic hydrides:

357) The chemical formula of plaster of Paris is

358) Alloys of which metal are light and strong and are used in the manufacture of aeroplane parts?

359) When magnesium is burnt in air, compounds of magnesium formed are magnesium oxide and:

360) Which element of IA group is most abundantly found in combined state?

361) Alkaline earth metal compounds are les soluble in water than corresponding alkali metal compounds because former have:

362) The decreasing order of second ionization energy of K, Ca and Ba is:

363) Fluorspar is:

364) The most soluble compound in water is:

365) Setting of plaster of Paris is

366) Calcium is obtained by

367) Which of the following metals has stable carbonates?

368) The main reason for using a mercury electrolytic cell in NaOH manufacture is that:

369) The ionic mobility of alkali metal ions in aqueous solution is maximum for

370) Beryllium hydride is obtained by:

371) The products of the electrolysis of concentrated aqueous solution of common salt are:

372) In the Down’s cell KCl is added in NaCl to:

373) Blanc fixe used in paints is:

374) The weakest base among the following is:

375) Calcium cyanide reacts with steam to form ammonia and:

376) Which salt on heating does not give brown coloured gas is?

377) The biggest ion is:

378) The element which does not dissolve in caustic soda is:

379) Which on heating with NaOH solution gives inflammable gas?

380) The colour of iodine solution is discharged by shaking it with aqueous solution of:

381) Hypo is chemically:

382) Which alkaline earth metal is the most abundant in the earth's crust?

383) The formula of the product formed, when sodium thiosulphate solution is added to silver bromide is

384) Mg burns with a brilliant flame. This property is used in:

385) Concrete is a mixture of:

386) The reaction of water with sodium and potassium is:

387) Which one is the highest melting point halide?

388) Beryllium shows diagonal relationship with

389) Bleaching action of bleaching powder is due to the liberation of

390) Which one of the following order of stability is correct?

391) Baryta water is:

392) Barium burns in air to form

393) The lightest metal among these is

394) In India, at the occasion of marriages, the fireworks used give green flame. Which one of the following radicals may be present?

395) A substance which gives a brick red flame and breaks down on heating giving oxygen and a brown gas is:

396) Complex forming tendency is more for

397) Alkali metals act as

398) The mineral of magnesium is

399) Mortar is a mixture of

400) In between the metals A and B, both form oxide but B also forms nitride, when both burn in air. So A and B are:

401) Which of the following alkaline earth metal sulphate has hydration enthalpy by higher than its lattice enthalpy?

402) NaOH is not used in:

403) Cement does not contain

404) A solution of KOH in water is called:

405) Which of the following hydrogen compounds is most ionic?

406) Which sequence of reactions shows correct chemical relation between sodium and its compounds?

407) The salt added to table salt to make it flow freely in rainy season is:

408) Lithopone is

409) Sodium bicarbonate solution on adding to magnesium sulphate solution forms:

410) Which pair of elements would form the most ionic bond?

411) Sodium carbonate is manufactured by Solvay process. The products those are recycled are:

412) Based on lattice energy and other considerations which one of the following alkali metal chlorides is expected to have the highest melting point?

413) Sodium carbonate on heating gives:

414) The correct order of hydration energy of alkaline earth metal ions is:

415) Which one has highest lattice energy?

416) The decomposition temperature is maximum for

417) Which of the following exists in polymeric form?

418) The element which on burning in air gives peroxide is

419) Electric cookers have a coating of ….that protects them against fire.

420) Limestone is not used in which of the following manufacturing processes?

421) Microcosmic salt is

422) Sodium burns in dry air to give:

423) The byproduct of Solvay process is:

424) Select the incorrect statement

425) Acidified solution of sodium thiosulphate is unstable because in thiosulphate:

426) Metals belonging to the same group in the periodic table are:

427) Which of the following compounds is a peroxide:

428) In the extraction of sodium by Down's process, cathode and anode are respectively

429) Milk of lime is:

430) Celestine is an ore of:

431) Which of the following statements is false regarding saline hydrides?

432) Among the alkali metals caesium is the most reactive because

433) Phosphine, acetylene and ammonia can be formed by treating water with

434) Soda ash is chemically:

435) Magnesia is:

436) Which one of the following processes is used for manufacture of calcium?

437) Which of the following ions, will have maximum hydration energy?

438) Which substance gives a different flame colouration from the others?

439) An alloy of Na + K is:

440) Chlorophyll contains:

441) Carnallite is

442) Oxygen can be obtained by heating:

443) Sodium carbonate solution in water is alkaline due to:

444) Which of the following pairs of substances would give same gaseous product in reaction with water?

445) Which of the following reaction does not liberate gaseous product?

446) Which of the following is not correct?

447) Which of the following compounds has the lowest melting point?

448) The outermost electron is most loosely held in:

449) On heating quick lime with coke in an electric furnace we get:

450) Which of the following is not an ore of magnesium?

451) Which salt will not impart colour to flame?

452) Gypsum is added to clinker during cement manufacture to:

453) The chloride that can be extracted with ether:

454) Which is most basic in character?

455) Iceland spar is:

456) Which of the following acts as reducing agent as well as oxidising agent?

457) Which of the following is correct?

458) Which will react with acid and alkalies both i.e., (amphoteric)?

459) Which is quick lime?

460) Pearl ash and caustic potash are chemically:

461) When sodium is heated in flame it gives:

462) Among the following, which has minimum solubility in water?

463) Sodium chloride imparts a golden yellow colour to the Bunsen flame. This can be interpreted due to:

464) Which property increases in magnitude as the atomic number of alkali metals increases?

465) Bleaching powder is obtained by the interaction of chlorine and

466) Ca, Sr and Ba dissolve in liquid ammonia giving a……

467) Potassium when heated strongly in oxygen, it forms:

468) The ionic conductances of following cations in a given concentration are in the order

469) Which can undergo both oxidation and reduction?

470) Which component of cement sets at the slowest rate?

471) Scarlet flame colour of Bunsen flame is characteristic of:

472) Which pair of the following chlorides do not impart colour to the flame?

473) Which one of the following electrolytes is used in Down's process of extracting sodium metal?

474) In the presence of cobalt chloride, bleaching powder decomposes to form

475) The highest oxidation potential stands for:

476) Melting point is highest for:

477) Sodium has…..as compared to potassium

478) Which ion forms hydroxide easily soluble in water?

479) One of the important use of quicklime is:

480) Which out of the following statements is not correct for anhydrous calcium chloride?

481) On heating washing soda, we get:

482) Sodium peroxide in contact with moist air turns white due to the formation of:

483) Which of the following is incorrect?

484) When sodium chloride solution is electrolysed, the gas that is liberated at the cathode is

485) Which alkaline earth metal nitride is volatile?

486) Manufacture of NaOH is done by:

487) Which one of the following statements is true for all the alkali metals?

488) Strongest reducing agent among the following is:

489) The compound which is not soluble in dil. HCl is:

490) Which alkali metal is most metallic in character?

491) Sodium is manufactured by the electrolysis of a fused mixture of sodium and calcium chlorides in a steel cell using a graphite anode and an iron cathode. Calcium is not liberated since:

492) One mole of magnesium nitride on the reaction with excess water gives:

493) Which of the following is known as dead burnt plaster?

494) Which of the compounds of cement sets at the slowest rate?

495) Which removes temporary hardness of water and is used in the manufacture of bleaching powder?

496) The alkali metal that reacts with nitrogen directly to form nitride is

497) Elements of group 1 and group VI in the periodic table have one thing common. That is with the increasing atomic number, the:

498) The most reactive element among the following is:

499) The non-metal which is not affected by NaOH:

500) Beryllium shows diagonal relationship with aluminium. Which of the following similarity is incorrect?

501) Which statement is correct for alkaline earth metals?

502) Which alkali metal bicarbonates does not exist as solid?

503) In a sodium chloride crystal, each chloride ion is surrounded by:

504) Alkaline earth metals are denser than alkali metals, because metallic bonding in alkaline earth’s metal is

505) The ion having maximum value of hydration energy is:

506) Magnesium metal is prepared by:

507) Which of the following hydroxides is amphoteric in nature?

508) Black ash is:

509) Sodium carbonate is:

510) How many elements are included in IA group?

511) Which category of salts of alkaline earth metals is not found in solid state, but found in solution state?

512) Which is not true in respect of berryllium chemistry?

513) The cation which forms a yellow precipitate with potassium chromate in acetic acid is:

514) For which one of the following minerals, the composition given is incorrect?

515) The stability of the following alkali metal chlorides follows the order:

516) The solubility of alkali metal hydroxide is

517) Which of the statements is not true?

518) The alkali metal which acts as a nutrient for plants is:

519) Glauber's salt is:

520) Which chloride is covalent and soluble in ether?

521) Which compound is used in photography?

522) Which metal does not form ionic hydride?

523) The dark red colour of bombs in fireworks is due to the presence of

524) Which of the following metal carbonates is decomposed on heating?

525) Which of the following is not soluble in NaOH?

526) Some large white transparent crystals are left out in a bowl for several days. They are then observed to have changed their form into white powder. The crystals may have been of

527) Excess of dilute sodium hydroxide solution is gradually added with shaking to an aqueous solution of zinc sulphate. What would you observe?

528) The raw materials in Solvay process are:

529) One mole of magnesium nitride on the reaction with an excess of water gives

530) Slaked lime is:

531) Sodium thiosulphate is prepared by

532) Setting of plaster of Paris involves

533) The only element which is radioactive among alkali metals is:

534) The pair of compounds which cannot exist together in solution is:

535) Potassium is kept in

536) Common table salt becomes moist and does not pour easily in rainy season because:

537) The calcium salt used as manure is:

538) Lithium iodide is:

539) Which of the following represents the composition of carnallite mineral?

540) Sodium metal cannot be stored under:

541) The element that forms a solid basic oxide at room temperature is:

542) Which ion has closed shell electronic configuration?

543) Which alkali metal is frequently used in solar cells?

544) Which gives apple green colour in fireworks?

545) Which of the following process is used in the extractive metallurgy of magnesium?

546) The substance used in Holme’s signal of the ship is a mixture of

547) Causticisation process is used for the preparation of:

548) Which of the following alkali metal ion in aqueous solution is the best conductor of electricity?

549) Indian saltpetre is:

550) Brine is chemically:

551) The atomic numbers of four elements are given below. Which is an alkaline earth metal?

552) The plaster of Paris is:

553) The ashes of plants contain alkali metals, 90% of which is:

554) Superphosphate of lime is a mixture of:

555) A solid is a compound of group 1 element and it gives a bright red colour in the flame test. The solid is

556) When sodium metal is dissolved in liquid ammonia, a blue solution is formed. The blue colour is due to:

557) The chemical which is used for plastering the broken bones is

558) Which one is not a correct formula?

559) Plaster of Paris on making paste with little water sets to hard mass due to formation of

560) Which one of the following is the highest melting halide?

561) The chemical formula of feldspar is

562) Which of the following properties of lithium does not show diagonal relationship with magnesium?

563) Lithium is strongest reducing agent among alkali metals due to which of the following factor?

564) Li, Na among alkali metals show properties of:

565) Caesium oxide will be:

566) When ammoniacal solution of common salt is saturated with carbon dioxide, we get:

567) Microcosmic salt has the formula:

568) The alkali metals form salt-like hydrides by the direct synthesis at elevated temperature. The thermal stability of these hydrides decreases in which of the following orders?

569) Which of the following has minimum values of cation-anion size ratio?

570) Which alkaline earth metal forms complex salts?

571) Which electronic configuration represents the configuration of the most electropositive element?

572) Le-blanc process is employed in the manufacture of

573) When a crystal of caustic soda is exposed to air, a liquid layer is deposited because:

574) The most soluble halide in water is

575) Which does not form double salt?

576) Which of the following on thermal decomposition yields a basic as well as an acidic oxide?

577) Sorel’s cement is

578) When KI is added to acidified solution of sodium nitrite then

579) The metallic lustre exhibited by sodium is due to:

580) Baryta is:

581) Which pair cannot exist together in solution?

582) NaOH is prepared by the electrolysis of:

583) Oxygen is obtained from bleaching powder by:

584) Washing soda is:

585) Element found in plant systems which forms an important constituent of photosynthesis is:

586) Chlorine reacts with 'X' to form bleaching powder. 'X' is

587) Hesenclever's process is a method for the manufacture of:

588) The most dangerous method of preparing hydrogen would be by the action of HCl on:

589) Which ion forms a hydroxide highly soluble in water?

590) Beryllium and aluminium exhibit many properties which are similar. But, the two elements differ in

591) The metal X is prepared by the electrolysis of fused chloride. It reacts with hydrogen to form a colourless solid from which hydrogen is released on treatment with water. The metal is:

592) The molecular formula of potash alum is

593) Dolomite is a carbonate ore of:

594) Which is known as crystal carbonate?

595) Which is used in preparation of portland cement?

596) The most electropositive element in alkali metals, is

597) Caustic soda is:

598) Photoelectric effect is maximum in

599) The solubilities of carbonates of magnesium group decreases down due to decrease in:

600) Highly pure dilute solution of sodium in liquid ammonia:

601) Tincal is:

602) Which one of the following is true?

603) The yellow light for illumination of lamps is from:

604) Calcium cyanamide reacts with steam to form ammonia and…….

605) Thermal decomposition of which compound yields a basic and acidic oxide simultaneously?

606) Which one of the following will dissolve in water most readily?

607) Which group of elements lose electrons more readily?

608) The nitride ion in lithium nitride is composed of:

609) firework gave bright crimson light. It is probably a salt of:

610) One of the elements present in carnallite shows flame colouration. The colour of the flame is

611) Which of the following dissolves in hot conc. NaOH solution?

612) The electrolyte employed in the extraction of sodium by Down's electrolysis method is:

613) Which of the following represents calcium chlorite?

614) Which compound gives acetylene on reaction with water?

615) Which represents nitrolime?

616) What are the metal ions present in carnallite?

617) Sodium reacts with water less vigorously than potassium because:

618) In which of the following reactions, MgO is not formed?

619) It is used as reducing agent in organic reactions.

620) Which of the following metal carbonates decomposes on heating?

621) Magnesium has polarizing power closer to that of:

622) The ionic carbide is:

623) The correct order of solubility of the sulphates of alkaline earth metals in water is

624) Compared with the alkaline earth metals, the alkali metals exhibit

625) The activity of alkaline earth metals as reducing agents

626) The main constituent of egg-shells is

627) Which of the following is weakest base?

628) Which alkali metal emits largest wavelength in the flame test?

629) The solubilities of carbonates decrease down the magnesium group due to decrease in

630) The bleaching action of bleaching powder is due to the formation of

631) Which of the following sulphates has the highest solubility?

632) A chloride dissolves appreciably in cold water. When placed on a platinum wire in Bunsen flame, no distinctive colour is noticed. Which one is cation?

633) Barium is extracted from its ore:

634) Oxone is name given to:

635) Which alkaline earth metal shows some anomalous behaviour and has the same electro negativity as aluminium?

636) The chemistry of lithium is very much similar to that of magnesium even though they are placed in different groups. The reason is:

637) Solvay process is used for the manufacture of

638) Which hydride is most stable?

639) Zinc carbonate can be obtained from a solution of zinc chloride by adding:

640) Ra is placed at the bottom of alkaline earth metals. The element should:

641) Who discovered radium?

642) Which gives least basic oxide?

643) The decomposition temperature is maximum for

644) Gun powder is:

645) Calcium phosphide is:

646) Which alkali metal reacts with nitrogen to form nitride?