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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 251. |
In the reaction, [A] and [B] respectively be :A. B. C. D. |
| Answer» Correct Answer - C | |
| 252. |
In the given reaction, the product [X] will be :A. B. C. D. |
| Answer» Correct Answer - B | |
| 253. |
In the reaction sequence, `[A]overset(HOH//OH^(-))toR-overset(O)overset(||)C-NH_(2)overset(HOH//H^(+))toR-COOH`, [A] will beA. RCNB. RNCC. RCHOD. `R_(2)CO` |
| Answer» Correct Answer - A | |
| 254. |
An orgainc compound A upon reacting with `NH_(3)` gives `B` On heating `B` give `C.C` in presence `KOH` reacts with `Br_(2)` to yield `CH_(3)CH_(2)NH_(2) A` is .A. `CH_(3)CH_(2)COOH`B. `CH_(3)COOH`C. `CH_(3)CH_(2)CH_(2)COOH`D. `CH_(3)-underset(CH_(3))underset(|)"CH"-COOH` |
| Answer» Correct Answer - A | |
| 255. |
Which of the following amides will not undergo Hofmann bromamide reaction?A. `CH_(3)CONH_(2)`B. `CH_(3)CH_(2)CONH_(2)`C. `C_(6)H_(5)CONH_(2)`D. `CH_(3)CONHCH_(3)` |
| Answer» Correct Answer - D | |
| 256. |
Among the following which one does not act as intermediate in Hofmann rearrangement?A. RNCOB. RNCC. `RCOddotNHBr`D. `RCOddotN` |
| Answer» Correct Answer - B | |
| 257. |
The structure of salol is :A. B. C. D. |
| Answer» Correct Answer - B | |
| 258. |
Bees wax is:A. myricyl palmitateB. myricyl stearateC. myricyl oleateD. mixture of higher hydrocarbons |
| Answer» Correct Answer - A | |
| 259. |
Natural wax is :A. oils and fatsB. long chain fatty acidsC. ester of long chain fatty acid and long chain alcoholD. long chain alcohol |
| Answer» Correct Answer - C | |
| 260. |
Dicarboxylic acids have carboxylic groups e.g. HOOC-COOH,oxalic acid HOOC`-CH_(2)-`COOH-Maloic acid HOOC-`(CH_(2))_(3)`-COOH-Glutaric acid HOOC,`(CH_(2))_(4)`-COOH,-Adipic acid Acidity of dicarboxylic acids depends upon the stabillity of intermediate ion and upon the distance between two carboxylic groups. shorter the distance between two carboxylic groups, greater is the acididc character. Melting point of the acids depends on the symmetry. greater the symmetry, higher will be the mp. Dicarboxylic acids on heating give monocarboxylic acid, alkanes, cyclic ketones dependings on the conditions. Which of the following dicarboxylic acid is used in the manufactures of nylon-6,6?A. Succinic acidB. Glutaric acidC. Adipic acidD. Oxalic acid |
| Answer» Correct Answer - C | |
| 261. |
Bees wax isA. Myricy palmiateB. Myricyl stearateC. Mixture of higher hydrocarbonsD. Myricyloleate |
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Answer» Correct Answer - A Bees wax is myricyl palmitate |
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| 262. |
`(CH_(3))_(2)C=CHCOCH_(3)` can be oxidised to `(CH_(3))_(2) C=CHCOOH` byA. chromic acidB. NaOH and `Br_(2)`C. Cu at `300^(@)C`D. `KMnO_(4)` |
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Answer» Correct Answer - B See A-Level Information |
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| 263. |
Saponification of ethyl benzoate with caustic soda as alkalie, givesA. Benzyl alochol, ethanoic acidB. Sodium benzoate, ethanolC. Benzoic acid, Sodium ethoxideD. Phenol, ethanoic acid |
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Answer» Correct Answer - B `underset("Acetaldehyde")(C_(6)H_(5)overset(O)overset(||)(C) - OC_(2)H_(5))overset(NaOH)rarr underset("Ethanol")(C_(2)H_(5)OH) + underset("Sodium benzoate")(C_(6)H_(5)COONa)` |
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| 264. |
Acetic acid on reaction with hydrazoic acid `(N_3 H)` in the presence of `H_2 SO_4` followed by heating and hydrolysis in basic medium gives acetamide. Methyl isocyanate `(Me-N=C=O)` is formed is an intermediate compound.A. If both (A) and ( R) are correct and ( R) is the correct explanation of (A).B. If both (A) and (R) are correct but (R) is not correct explanation of (A).C. If (A) is correct but ( R) is incorrect.D. If (A) is incorrect but ( R) is correct. |
| Answer» Correct Answer - D | |
| 265. |
Which of the following statements are correct about nucleophilic acyl substitution ?A. `RCOCl` is more reactive than `RCON_3` (acid azide).B. `RCON_3` is more reactive then enhydride.C. `RCON_3` is less reactive than anhydride.D. Esters are less reactive than anhydrides but more reactive tham amides. |
| Answer» Correct Answer - A::B::D | |
| 266. |
Acyl halide is formed by reacting `PCl_(5)` withA. AlcoholB. EsterC. AmideD. Both carboxylic acids as well as esters |
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Answer» Correct Answer - D The answer are based upon the reactions given in Comprehensve Review. |
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| 267. |
Among the given compounds, the most susceptible to nucleophilic attack at the carbonyl group is:A. `CH_(3)CH_(2)CH_(2)CH_(2)COOC_(2)H_(5)`B. `C_(6)H_(5)COOC_(2)H_(5)`C. `C_(6)H_(11) CH_(2)COOC_(2)H_(5)`D. `C_(6)H_(5)CH_(2)COOC_(2)H_(5)` |
| Answer» Correct Answer - B | |
| 268. |
Explain the reactivity of acyl compounds in the order:A. acid chloride`gt` amide`gt` anhydride`gt` esterB. acid chloride `gt` anhydride `gt` ester `gt` amideC. ester `gt` acid chloride `gt` anhydride `gt` amideD. ester `gt` anhydride `gt` acid chloride `gt` amide |
| Answer» Correct Answer - B | |
| 269. |
In a reaction, `(A)overset(NH_(3))to(B)overset(Heat)to(C )overset(P_(2)O_(5))toC_(2)H_(5)CN` (A), (B) and (C) are:A. `CH_(3)COOH, CH_(3)COONH_(4) and CH_(3)CONH_(2)`B. `CH_(3)COCl, CH_(3)CONH_(2) and CH_(3)COONH_(4)`C. `C_(2)H_(5)COOH, C_(2)H_(5)COONH_(4) and C_(2)H_(5)CONH_(2)`D. `C_(2)H_(5)COONH_(4) , C_(2)H_(5)CONH_(2) and C_(2)H_(5)COOH` |
| Answer» Correct Answer - C | |
| 270. |
The product (Z) in the following reaction : `RCOOH overset(NH_(3))rarr X overset("heat")rarr Y underset("heat")overset(P_(2)O_(5))rarr Z`A. `RNH_(2)`B. `RCN`C. `RNC`D. `RCONH_(2)` |
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Answer» Correct Answer - B `RCOOH overset(NH_(3))rarr underset((X))(RCOONH_(4))overset(Delta)rarr underset((Y))(RCONH_(2))underset(Delta)overset(P_(2)O_(5))rarr underset((Z))(RCN)` |
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| 271. |
The product (C) in the following reactions is: `RCOOHoverset(NH_(3))to(A)overset(Heat)to(B)underset(Delta)overset(P_(2)O_(5))to(C)`A. `RNH_(2)`B. RCNC. RNCD. `RCONH_(2)` |
| Answer» Correct Answer - B | |
| 272. |
`X underset(P_(2)O_(5))overset("Heat")rarr` Malonic acid `underset(432K)overset(Delta)rarr Y` X and Y in the above reaction sequence areA. `C_(3)O_(2), CH_(3)COOH`B. `CO_(2), CH_(3)COOH`C. `CO_(2), CO_(2)`D. `CH_(3)CHO, CH_(3)COOH` |
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Answer» Correct Answer - A `underset("Malonic acid")(CH_(2) (COOH)_(2)) underset(Delta)overset(423 K)rarr underset((Y))(CH_(3) COOH) + CO_(2)` `underset("Malonic acid")(CH_(2) (COOH)_(2)) overset(P_(2)O_(5))rarr underset((X))(O = C = C) = O + 2H_(2)O` |
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| 273. |
Reaction of R-COOH with `N_(3)`H gives `RNH_(2)` as the main product The intermediates involved in this reaction are:A. `RNHNH_(2)`B. `RCON_(3)`C. RNCOD. `RCONH_(2)` |
| Answer» Correct Answer - B::C | |
| 274. |
Oxides are more acidic than hydroxylamine `(NH_2 OH)`. Conjugate base of oxime is resonance stabilised.A. If both `(A)` are `( R)` are true and `( R)` is the correct explanation of `(A)`.B. If both `(A)` and `( R)` are true but `( R)` is not the correct explanation of `(A)`.C. If `(A)` is true but `( R)` is false.D. If `(A)` is false but `( R)` is true. |
| Answer» Correct Answer - A | |
| 275. |
Reaction of `R-overset(O)overset(||) C-NH_2` with a mixture of `Br_2` and `KOH` gives `R-NH_2` as the main product. The intermediates involved in this reaction are :A. `R-overset(O)overset(||)C-NHBr`B. R-N=C= OC. R-NHBrD. |
| Answer» Correct Answer - A::B | |
| 276. |
Urea is prepared in the laboratory by the action of `NH_(3)` onA. carbonyl chlorideB.C. ethyl carbonateD. cyanamide |
| Answer» Correct Answer - A::B | |
| 277. |
Urea on hydrolysis gives:A. acetamideB. `NO_(2)`C. carbonic acidD. `NH_(4)OH` |
| Answer» Correct Answer - C | |
| 278. |
Urea on treatment with sodium hypobromite gives:A. sodium carbonateB. nitrogenC. `CO_(2) and H_(2)O`D. all of these |
| Answer» Correct Answer - D | |
| 279. |
`(A)overset(PCl_(5))toRCOCl`, (A)may be :A. RCOOHB. RCOORC. `RCONH_(2)`D. `(RCO)_(2)O ` |
| Answer» Correct Answer - A::B::D | |
| 280. |
Acetic anhydride is prepared in the laboratory by heating sodium acetate withA. ethyl chlorideB. acetyl chlorideC. conc. `H_(2)SO_(4)`D. Zinc dust. |
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Answer» Correct Answer - B `CH_(3)COONa + CH_(3)COCl overset(Delta)rarr underset("Acetic anhydride")(CH_(3)COOCOCH_(3)) + NaCl` |
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| 281. |
Acetic anhydride may be prepared by the reaction of acetic acid with:A. `H_(2)C=C=O `B. `LiAlH_(4)`C. `P_(2)O_(5)`D. `C_(2)H_(5)OH//HgSO_(4)` on heating |
| Answer» Correct Answer - A::C::D | |
| 282. |
Acetic anhydride is prepared industrially by :A. beating sodium acetate with thionyl chloride sulphuryl chlorideB. beating acetylene into glacial acetic acid containing some mercuric sulphateC. passing ketene through glacial acetic acidD. all of the above |
| Answer» Correct Answer - C | |
| 283. |
Urea may be identified by which of the following tests?A. With `CHCl_(3)//KOH`, it gives very offensive odourB. With nitrous acid, it evolves` N_(2) and CO_(2)`C. With NaOH and a drop of `CuSO_(4)`, it gives violet colourD. With NaOH on heating, it gives a smell of `NH_(3)` gas |
| Answer» Correct Answer - B::C::D | |
| 284. |
Which of the following compounds does not react with acetyl chloride ?A. MethylamineB. DimethylamineC. AnilineD. Trimethylamine |
| Answer» Correct Answer - D | |
| 285. |
Acetic anhydride is prepared industrially by heating sodium acetate with:A. `PCl_(5)`B. `SOCl_(2)`C. `CH_(3)COCl`D. `Cl_(2)andSCl_(2)` |
| Answer» Correct Answer - B::C::D | |
| 286. |
Urea on heating with ethyl alcohol gives:A. urethaneB. semicarbazideC. malonyl ureaD. ethyl carbamate |
| Answer» Correct Answer - A::D | |
| 287. |
Acetyl chloride and sodium propanoate will give:A. acetic anhydrideB. propionic anhydrideC. acetic propionic anhydrideD. ethyl propanoate |
| Answer» Correct Answer - C | |
| 288. |
Acetyl chloride is not obtained from acetic acid by the action of:A. `CHCl_(3)`B. `SOCl_(2)`C. `PCl_(3)`D. `PCl_(5)` |
| Answer» Correct Answer - A | |
| 289. |
Which of the following reagents does not react with acetic acid to form acetyl chlorideA. `SO_(2)Cl_(2)`B. `SOCl_(2)`C. `PCl_(5)`D. `PCl_(3)` |
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Answer» Correct Answer - A Reaction between an acid and `SO_(2)Cl_(2)` does not give acid chloride |
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| 290. |
Acetyl chloride is prepared industrially by distilling sodium acetate with:A. HClB. `SO_(2)Cl_(2)`C. `PCl_(5)`D. `POCl_(3)` |
| Answer» Correct Answer - B::D | |
| 291. |
(A) The `pK_(a)` value of acetic acid is lower than that of phenol. ( R) Phenoxide ion is more resonance stabilized.A. If both (A) and (R) are correct and (R) is the correct explanation of (A).B. If both (A) and (R) are correct but (R) is not correct explanation of (A).C. If (A) is correct but (R) is incorrect.D. If (A) is incorrect but (R) is correct. |
| Answer» Correct Answer - B | |
| 292. |
(A) Formic acid is a weaker acid than acetic acid. (R) `pK_(a)` of formic acid is less than acetic acid.A. If both (A) and (R) are correct and (R) is the correct explanation of (A).B. If both (A) and (R) are correct but (R) is not correct explanation of (A).C. If (A) is correct but (R) is incorrect.D. If (A) is incorrect but (R) is correct. |
| Answer» Correct Answer - D | |
| 293. |
Which one of the following is a cationic detergent ?A. Cetyl trimethyl ammonium bromideB. Sodium dodecyl benzene sulphonateC. Sodium lauryl sulphateD. Glyceryl palmitate |
| Answer» Correct Answer - A | |
| 294. |
Which is not a glyceride:A. FatB. OilC. PhospholipidD. Soap |
| Answer» Correct Answer - D | |
| 295. |
Oils and fats are mixtures of:A. higher alcoholsB. esters of higher acidsC. esters of lower acidsD. higher acids |
| Answer» Correct Answer - B | |
| 296. |
The process by which vegetable ghee is manufactured known as:A. saponificationB. hydrogenationC. esterificationD. hydrolysis |
| Answer» Correct Answer - B | |
| 297. |
A nucleophilic reagent will readily attackA. EthyleneB. EthanalC. Ethanoyl chlorideD. Ethyne |
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Answer» Correct Answer - C See A-Level Information of acid derivatives |
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| 298. |
Which of the following acids on heating loses a molecule of `H_(2)O` to form an `alpha, beta-` unsaturated acid ?A. `CH_(3)CHOHCOOH`B. `HOCH_(2)COOH`C. `CH_(3)CHOHCH_(2)COOH`D. `HOCH_(2)CH_(2)COOH` |
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Answer» Correct Answer - C See A-Level Information of acids |
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| 299. |
The decarboxylation of `beta`-ketoacids `beta,gamma`-unsaturated acid an germinal diacid proceed through the fomultlon of cyclic transition state in presence of heat. Find the correct product of following reaction : `H_(3)C-CH=CH-CD_(2)-overset(O)overset(||)C-OHoverset(Delta)to`A. `H_(3)C-CH_(2) -CH=CD_(2)`B. `CH_(3)-CH=CH- CHD_(6)`C. `H_(3)C-underset(CHD_(2))underset(|)C-CH_(2)`D. None of the above |
| Answer» Correct Answer - A | |
| 300. |
Claisen condensation is not given by:A. B. C. D. |
| Answer» Correct Answer - B | |