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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.
| 301. |
Assertion : `LiAlH_(4)` reduces esters to acids Reason : Esters which containe `alpha-` hydrogen undergo Claisen condensationA. Both A and R are true is the correct explanation of AB. Both A and R are true but R is not a correct explanation of AC. A is true but R is falseD. A is false but R is true |
| Answer» Correct Answer - D | |
| 302. |
The relative reactivities of acyl compounds towards nucleophilic substitution are in the order ofA. Acid anhydride `gt` Amide `gt` Ester `gt` Acyl chlorideB. Acyl chloride `gt` Ester `gt` Acid anhydride `gt` AmideC. Acyl chloride `gt` Acid anhydride `gt` Ester `gt` AmideD. Ester `gt` Acyl chloride `gt` Amide `gt` Acid anhydride |
| Answer» Correct Answer - C | |
| 303. |
(A) Ethyl benzoate is not neutral towards litmus. (R) Ethyl benzoate gives claisen condensation reactiotion with ethyl acetateA. 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 | |
| 304. |
(A) Ethyl acetate is more reactive than acetamide towards nucleophilic substitution. (R) `-OC_(2)H_(5)` is more electron attracting than `- NH_(2)` group.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 - A | |
| 305. |
`C_(2)H_(5)OC_(2) + CO overset(BF_(3), 150^(@)C)rarr` The poduct formed in the above reaction isA. Ethyl carbonateB. Ethyl acetateC. Ethyl alcoholD. Ethyl propionate |
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Answer» Correct Answer - D `underset("Ethyer")(C_(2)H_(5)OC_(2)H_(5)) + CO underset(150^(@)C)overset(BF_(3)) rarr underset("Ethyl propionate")(C_(2)H_(5) overset(O)overset(||)(C) - OC_(2)H_(5))` |
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| 306. |
A compound undergoes the following sequence of reactions: `C_(3)H_(5)Noverset("Hydrolysis")tounderset((A))(C_(3)H_(6)O_(2))overset(Cl_(2)//p)tounderset((B))(C_(3)H_(5)O_(2)Cl)overset(NH_(3))tounderset((C))(C_(3)H_(7)NO_(2))` The compound (C) is:A. 1-nitropropaneB. 2-aminopropionic acidC. 2-nitropropaneD. 2-hydroxypropanamide |
| Answer» Correct Answer - B | |
| 307. |
Consider the following reactions I. II. `CH_(3)CH_(2)Br overset(KCN)rarr overset(H_(3)^(+)O)rarr` III. `CH_(3)CH_(2) overset(O)overset(||)(C)OC_(2)H_(5) underset(H_(3)^(+)O)overset(CH_(3)MgBr (2 mol))rarr` Propanoic acid is the final product inA. I, II and IIIB. I and IIC. I and IIID. II and III |
| Answer» Correct Answer - B | |
| 308. |
`CH_(3)CHI_(2)overset(KCN)tounderset(Delta)overset(H_(2)O`, here the end product would be:A. 2-cyanopropionic acidB. ethane-1, 1-dicarboxy.li.c acidC. 2-methyl ethanoic acidD. propionic acid |
| Answer» Correct Answer - D | |
| 309. |
`CH_(3)COOH overset(Br_(2)//P)rarr Y underset((i) H_(3)O^(+))overset((i)KCN)rarr X` Here, X isA. Glycollic acidB. `alpha-`hydroxypropionic acidC. succinic acidD. Malonic acid |
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Answer» Correct Answer - D `{:(CH_(3) - COOH overset(Br_(2)//P)rarr BrCH_(2) - COOH),(" "KCN (alc) darr),(HOOC - CH_(2)- COOH overset(H_(3)O^(+))larr underset("Malonic acid")(NC - CH_(2) - COOH) ):}` |
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| 310. |
Statement-I: `CH_(3)COCH_(2)COOC_(2)H_(5)` will give iodoform test. Because Statement-II: It contains `CH_(3)overset(O)overset(||)C-` group linked to a carbon atom.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 | |
| 311. |
The acid strength of active methylene group in (I) `CH_(3)COCH_(2)COOC_(2)H_(5)` (II) `CH_(3)COCH_(2)COCH_(3)` (III) `C_(2)H_(5)OO"CC"H_(2)COOC_(2)H_(5)`, decreases as :A. `IgtIIIgtII`B. `IgtIIgtIII`C. `II gtIgt III`D. `IIIgtIgtII` |
| Answer» Correct Answer - C | |
| 312. |
`CH_(3)COOH overset(P//Br_(2))toCH_(2)BrCOOH`. The reaction is called:A. Schotten-Baumann reactionB. Hell-Volhard-Zelinsky reactionC. Finkelstein reactionD. none of the above |
| Answer» Correct Answer - B | |
| 313. |
What is the product of the reaction `C_(6)H_(5)COOCH_(3) overset(LiAlH_(4))rarr`...... + ........A. `C_(6)H_(5)COOH + CH_(3)OH`B. `C_(6)H_(5)CH_(2)OH + CH_(3)OH`C. `C_(6)H_(5)CHO + CH_(3)COOH`D. All the above products. |
| Answer» Correct Answer - B | |
| 314. |
Number of cross products in the given reaction, `CH_(3)COOC_(2)H_(5) + C_(6) H_(5)CH_(2)COOC_(2)H_(5)overset(C_(2)H_(5)Ona// C_(2) H_(5)OH)to` will be:A. oneB. threeC. twoD. four |
| Answer» Correct Answer - C | |
| 315. |
`C_(6)H_(5)CO - COC_(6) H_(5) overset(OH^(-))rarr (C_(6)H_(5))_(2) overset(OH)overset(|)(C) - COOH` the above reaction is known asA. Backmann rearrangementB. Benzilic acid rearrangementC. Benzoin condensationD. Aldol condensation |
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Answer» Correct Answer - B It is an example of Benzilic acid rearrangements |
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| 316. |
Reaction, `CH_(3)COOCH_(3) +C_(8)H_(17)COOHunderset(Delta)overset( C_(8)H_(17)COONa)toCH_(3)COOC_(8)H_(17)+CH_(3)COOH` is called as:A. reverse esterificationB. cis-esterificationC. trans-esterificationD. both (a) and (c) |
| Answer» Correct Answer - C | |
| 317. |
`underset((A))(MeCH_(2)COOH)underset(underset((iii)Ag_(2)O //Pt)((ii)CH_(2)N_(2)))overset((i)SOCI)rarr(B)overset(H_(2)O)rarr(C)` Which of the following statements are correct about the given reaction.A. The product `(B)` and `(C )`, respectively, are `MeCH=C=O` and `MeCH_2 COOMe`.B. The products `(B)` and `( C)`, respectively, are : `MeCH_2 CH=C=O` and `MeCH_2 CH_2 COOH`.C. The reaction is known as Wolff rearrangement reaction.D. The reaction is known as rearrangement reaction. |
| Answer» Correct Answer - B::D | |
| 318. |
In a set of reactions acetic acid yielded a product S `CH_(3)COOH overset(SOCl_(2))rarrP underset("Anhy." AlCl_(3))overset("Benzene")rarr Q` `overset(HCN)rarrR overset(H_(2)O //H^(+))rarrS` The structure of S would be :A. B. C. D. |
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Answer» Correct Answer - A `{:(" "CN" "COOH),(" |" " |"),(CH_(3)COOH rarr CH_(3)COCl (P) overset(C_(6)H_(6). AlCl_(3))rarr C_(6)H_(5)COCH_(3) (Q) overset(HCN)rarr CH_(3) - C - CH_(3) (R) overset(H_(2)O // H^(+))rarr CH_(3) - C - CH_(3) (S)),(" |"" |"),(" "OH" "OH):}` |
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| 319. |
`CH_(3)COOH`, when reacts with `C_(2)H_(5)OH`, gives a product. The same product is obtained with which reaction ?A. Acetic acid + methanolB. Acetic anhydride + waterC. Acetic angydride + ethanolD. Acetamide + methanol |
| Answer» Correct Answer - C | |
| 320. |
`CH_(3)COOH overset(NH_(3))rarr rarr`? Product of the reaction is isomeric withA. `underset(NH_(2))underset(|)(CH_(2)) - CHO`B. `CH_(3)CH = NOH`C. `HCOOH - CH_(3)`D. all of these |
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Answer» Correct Answer - D `underset("Acetic acid")(CH_(3)COOH)overset(NH_(3))rarr CH_(3)COONH_(4) underset(-H_(2)O)overset(Delta)rarr CH_(3)CONH_(2)` The isomers of `CH_(3)CONH_(2)` are (i) `NH_(2)CH_(2)CHO` (ii) `CH_(3) - CH = NOH` (iii) `N - COOH - CH_(3)` |
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| 321. |
The conversion of `CH_(3)OH` into `CH_(3)COOH` can be brought about by the following reagentsA. `K_(2)Cr_(2)O_(7)//H^(+)`B. `CO + Rh`C. `KMnO_(4)`D. `H_(3)PO_(4)` |
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Answer» Correct Answer - B `CH_(3)OH + CO overset("Rh catalyst")rarr CH_(3)COOH` |
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| 322. |
`CH_(3)CH_(2)CH_(2)CH_(2)CH_(2)COOHrarrCH_(2)CH_(2)CH_(2)-overset(overset(NH_(2))|)(C)H-COOH` the reagents used in the conversion are :A. (i) Red P, `Br_(2)//(ii) NH_(3)` (excess)B. (i) `PBr_(3)//(ii) NH_(3)`C. (i) `PBr_(3), NaCN//(ii) LiAIH_(4)`D. none of the above |
| Answer» Correct Answer - A | |
| 323. |
The best combination of reagents for carrying out the conversion `RCH_(2)CH_(2) OH rarr RCH_(2)CH_(2)COOH` isA. `PBr_(3), KCN, H_(3)O^(+)`B. `PBr_(3), KCN, H_(2)//Pt`C. `KCN, H_(3)O^(+)`D. `PBr_(3), H_(3)O^(+)` |
| Answer» Correct Answer - A | |
| 324. |
`R - CH_(2) - CH_(2)OH` can be converted into `RCH_(2)CH_(2)COOH`. The correct sequence of reactants isA. `PBr_(3), KCN, H^(+)`B. `PBr_(3), KCN, H^(+)`C. `KCN, H^(+)`D. `HCN, PBr_(3), H^(+)` |
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Answer» Correct Answer - A `RCH_(2) CH_(2)OH overset(PBr_(3))rarr RCH_(2)CH_(2)Br overset(KCN)rarr RCH_(2)CH_(2) CN overset(H^(+))rarr RCH_(2)CH_(2)COOH`. |
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| 325. |
The acid S obtained through the following sequence of reactions is : `C_(2)H_(5)Br overset(Alc. KOH)rarr P underset(C Cl_(4))overset(Br_(2))rarr Q underset(("excess"))overset(KCN)rarr R overset(H_(3)O^(+))rarr S`A. Succinic acidB. Malonic acidC. Maleic acidD. Oxalic acid |
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Answer» Correct Answer - A `{:(" "Br " "Br" "CN" "CN" "COOH " COOH"),(" |"" |"" |"" |"" |"" |"),(P = CH_(2) = CH_(2) , Q = CH_(2) - CH_(2) R = CH_(2) - CH_(2) , S = underset("Succinic acid")(CH_(2) - CH_(2)) ):}` |
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| 326. |
The reaction `RCH_(2)CH_(2)COOH underset(Br_(2))overset("Red P")rarr R - CH_(2) - underset(Br)underset(|)(CH) - COOH` is calledA. Reimer-Tiemann reactionB. Hell-Volhard Zelinsky reactionC. Cannizzaro reactionD. Sandmeyer reaction |
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Answer» Correct Answer - B Hell-Volhard Zelinsky reaction |
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| 327. |
`CH_(3)CH_(2)COOH underset("Red P")overset(Br_(2))rarr X overset(NH_(3)(alc.))rarr Y` Y in the above reaction isA. Lactic acidB. EtylamineC. PropylamineD. Alanine |
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Answer» Correct Answer - D `CH_(3)CH_(2) COOH underset(-HCl)overset(Br_(2), "Red P")rarr CH_(3) - overset(Br)overset(|)(CH) - COOH overset(NH_(3)(alc.))rarr underset("Alanine")(CH_(3) -overset(NH_(2))overset(|)(CH) - COOH)` |
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| 328. |
The acid formed when `n`-propyl magnesium bromide is treated with carbon dioxide isA. `C_(3)H_(7)COOH`B. `C_(2)H_(5)COOH`C. both A and BD. None |
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Answer» Correct Answer - A `{:(O = C = O + CH_(3) - CH_(2) Mg Br,),(overset("Dry ether")rarr O = C - OMg Br,),(" "|,),(" "CH_(2) - CH_(2) - CH_(3),):}` `underset(-Mg(OH)Br)overset(H_(2)O // H^(+))rarr H_(3)C - CH_(2) - CH_(2) - overset(O)overset(||)(C) - OH` |
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| 329. |
`CH_(3)COCl` on reaction with hot alcoholic potash givesA. `CH_(3)COOH`B. `CH_(2) = C = O`C. `CH_(3)COO^(-)K^(+)`D. `(CH_(3)CO)_(2)O` |
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Answer» Correct Answer - B `CH_(3)COCl` on reaction with hot alcoholic potash undergoes loss of `HCl` to form ketene `CH_(2) = C = O` `CH_(3) - COCl + KOH (alc.) overset(Delta)rarr underset("Ketene")(CH_(2) = C = O) + KCl + H_(2)O` |
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| 330. |
A hydrocarbon `C_6 H_12` decolourises bromine solution and yields `n-`hexane on hydrogenation. On oxidation with `KMnO_4` it affords two different monobasic acids of the type `R-COOH`. The compound is :A. CyclohexaneB. Hex-2-eneC. Hex-1-eneD. Hex-3-ene |
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Answer» Correct Answer - B `underset("Hex -2-ene")(CH_(3)CH = CHCH_(2)CH_(2)CH) overset([O])rarr CH_(3)COOH + CH_(3) CH_(2)CH_(2)COOH` |
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| 331. |
The molecular weight of benzoic acid in benzene as determined by depression in freezing point method corresponds to :A. Ionisation of benzoic acidB. Dimerisation of benzoic acidC. Trimerisation of benzoic acidD. Solution of benzoic acid |
| Answer» Correct Answer - B | |
| 332. |
(A) p-Hydroxy benzoic acid has a lower boiling point than o-hydroxy benzoic acid. (R) a-Hydroxy benzoic acid has intramolecular hydrogen bonding.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 | |
| 333. |
Cyclic ester (A) reacts with methyl alcohol to give (B) What is the compound (B)?A. B. C. D. |
| Answer» Correct Answer - B | |
| 334. |
Acetamide is treated separately with the following reagents which one of these would give methylamine?A. Hot conc. `H_(2)SO_(4)`B. `PCl_(5)`C. `NaOH-Br_(2)`D. Soda lime |
| Answer» Correct Answer - C | |
| 335. |
Acetamide is treated separately with the following reagents which one of these would give methylamine?A. `PCl_(5)`B. `NaOH + Br_(2)`C. Soda limeD. Hot conc. `H_(2)SO_(4)` |
| Answer» Correct Answer - B | |
| 336. |
Carboxylic acids do not give the characterstic properties of:A. B. `-COOH` groupC. alkyl groupD. none of these |
| Answer» Correct Answer - A | |
| 337. |
Which of the following intermediate species is/are formed in the reaction of acrylic acid with HBr to give `beta`-bromopropanoic acid? `H_(2)C=CH-COOHoverset(HBr)to BrCH_(2)-CH_(2)-COOH`A. B. C. D. |
| Answer» Correct Answer - A::B::C::D | |
| 338. |
The reaction of acetamide with bromine and caustic potash gives:A. ethylamineB. methylamineC. acetic acidD. bromoacetic acid |
| Answer» Correct Answer - B | |
| 339. |
Hydrolytic reaction of fats by caustic soda is known asA. AcetylationB. CarboxylationC. EsterificationD. Saponification |
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Answer» Correct Answer - D Alkaline hydrolysis of fats is called Saponification. |
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| 340. |
HVZ reaction is used for the synthesis ofA. primary aminesB. `alpha-`bromo acidsC. aldehydesD. ketones |
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Answer» Correct Answer - B `alpha-` Halo acids |
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| 341. |
Which of the following acids is not capable of undergoing HVZ reaction ?A. Ethanoic acidB. Propionic acidC. `(CH_(3))_(2) CHCOOH`D. Trichloroacetic acid |
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Answer» Correct Answer - D Due to lack of `alpha -H` atom |
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| 342. |
Which of the following will not undergo HVZ reaction?A. 2,2-Dimethylpropanoic acidB. Propanoic acidC. Acetic acidD. 2-Methylpropanoic acid |
| Answer» Correct Answer - A | |
| 343. |
Which of the following reagents can be used to test carboxylic group?A. `NaHCO_(3)`B. `FeCl_(3)`C. Alcohol in presence of conc. `H_(2)SO_(4)`D. Ceric ammonium nitrate |
| Answer» Correct Answer - A::B::C | |
| 344. |
Which of the following reagents cannot be used for converting ?A. `CH_(3)COOH//H_(2)SO_(4)`B. `CH_(3)COCH_(3)`C. `(CH_(3)CO)_(2)O`D. `CH_(3)COCl` |
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Answer» Correct Answer - B Acetone `(CH_(3) COCH_(3))` cannot be used for acetylating an `-OH` group |
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| 345. |
Assertion : Methanoic acid reduces mercuric chloride to mercurous chloride on heating while ethanoic acid does not Reason : Methanoic acid is a stronger acid than ethanoic acidA. Both A and R are true is the correct explanation of AB. Both A and R are true but R is not a correct explanation of AC. A is true but R is falseD. A is false but R is true |
| Answer» Correct Answer - B | |
| 346. |
Which of the following reagents is used to distinguish between methanoic acid and ethanoic acid ?A. Amm. Silver nitrate solutionB. Neutral ferric chlorideC. Sodium hydroxide solutionD. sodium carbonate solution |
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Answer» Correct Answer - A `HCOOH` can reduce ammoniacal `AgNO_(3)` solution but other carboxylic acids do not |
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| 347. |
The most appropriate reagent for converting pentan-2-one to butanoic acid isA. Sodium hypochlorite followed by acidic hydrolysisB. `O_(2)`C. `H_(2)O_(2)`D. `KMnO_(4)//H_(2)SO_(4)` |
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Answer» Correct Answer - A `underset("Pent-2-one")(CH_(3) - overset(O)overset(||)(C) - CH_(2) CH_(2) CH_(3))overset(NaOCl)rarr CH_(3)Cl + CH_(3)CH_(3)CH_(2)COONa overset(H_(2)O // H^(+))rarr underset("Butanoic acid")(CH_(3)CH_(2)CH_(2)COOH)` |
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| 348. |
Which of the following decreasing order of acid strength of (i) Methanoic acid (ii) Ethanoic acid (iii) Propanoic acid (iv) Butanoic acid is correct ?A. `(i) gt (ii) gt (iii) gt (iv)`B. `(iv) gt (iii) gt (ii) gt (i)`C. `(i) gt (iv) gt (iii) gt (ii)`D. `(iv) gt (i) gt (ii) gt (iii)` |
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Answer» Correct Answer - A With increase in the `+I` effect of alkyl group acidic nature decreases |
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| 349. |
The `pK_(a)` of acetylsalicylic acid (aspirin) is 3.5. The pH of gastric juice in human stomach is about `2-3` and pH in the small intestine is about 8. Aspirin will beA. Unionized in the small intestine and in the stomachB. Completely ionized in the stomach and almost unionized in the small intestineC. Ionised in the stomach and almost unionized in the small intestineD. Ionised in the small intestine and almost unionized in the stomach |
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Answer» Correct Answer - D The pH of gastric juice in humar stomach is about 2-3 (highly acidic) acetyl salicylic acid is a weak acid, as such its ionisation will be supressed in the presencce of a strong acid. Thus it will be weak acid, as such its ionisation will be suppressed in the presence of a strong acid. The `pH` in the small intestine is about 8 i.e, slightly basic as such ionisatation of aspirin will increase in small intestine. Thus it will be more ionised in small intestine |
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| 350. |
Which of the following will be produced when ethanoic acid and diazomethane are allowed to react ?A. Ethyl acetateB. Methyl methanoateC. Methyl ethanoateD. Ethanoyl cyanide |
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Answer» Correct Answer - C `underset("acid")underset("Ethanoic")(CH_(3)COOH) + underset("methane")underset("Diazo")(CH_(2)N_(2)) rarr underset("Methyl ethanoate")(CH_(3) - overset(O)overset(||)(C) - OCH_(3) + N_(2))` |
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