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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.
| 51. |
Which of the following does give violet colour with neutral ferric chloride ?A. Acetic acidB. Salicylic acidC. Formic acidD. Benzoic acid |
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Answer» Correct Answer - B Because it contains `-OH` group |
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| 52. |
Acetic acid reacts with chlorine in the presence of catalyst, anhydrous `FeCl_(3)` to give:A. acetyl chlorideB. methyl chlorideC. trichloroacetic acidD. chloral hydrate |
| Answer» Correct Answer - C | |
| 53. |
Which acid gives wine red colour with neutral `FeCl_(3)`A. propanoic acidB. acetic acidC. formic acidD. none |
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Answer» Correct Answer - B See Acetic acid |
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| 54. |
Amides are formes by the reaction of acid chloride with :A. `NH_(2)NH_(2)`B. `NH_(3)`C. `NH_(2)OH`D. `C_(6)H_(5)NHNH_(2)` |
| Answer» Correct Answer - B | |
| 55. |
Assertion : Acetic acid does not undergo haloform reaction. Reason : Acetic acid does not have any `alpha- H` atomA. 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 - C | |
| 56. |
Which of the following enzymes hydrolyses triglycerides to fatty acids and glycerol?A. LipaseB. PepsinC. AmylaseD. Maltase |
| Answer» Correct Answer - A | |
| 57. |
which of the following is not a fatty acid?A. Stearic acidB. Palmitic acidC. Propionic acidD. Phenyl acetic acid |
| Answer» Correct Answer - D | |
| 58. |
When propanamide is reacted with `Br_(2)` and NaOH, the product formed is :A. propanamineB. ethanamineC. propanaldehydeD. propionic acid |
| Answer» Correct Answer - B | |
| 59. |
Acetic anhydride is used:A. as an acetylating agentB. for the detection and estimation of -OH and `-NH_(2)` groupsC. in the manufacture of aspirinD. all of the above |
| Answer» Correct Answer - B | |
| 60. |
Which type of organic compound is most resistant oxidation by acidified potassium dichromate?A. AlkeneB. AlcoholC. AldehydeD. Carboxylic Acid |
| Answer» Correct Answer - D | |
| 61. |
Acetic anhydride is obtained by the reaction ofA. sodium and acetic acidB. water and acetic acidC. ethyl alcohol and acetic acidD. `P_(2)O_(5)` and acetic acid |
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Answer» Correct Answer - D `2CH_(3)COOH overset(P_(2)O_(5) //Delta)rarr (CH_(3)CO)_(2)O + H_(2)O` |
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| 62. |
Which of the following compounds is the strongest acid ?A. HCOOHB. `CH_(3)COOH`C. `Cl_(2)CHCOOH`D. `C_(6)H_(5)COOH` |
| Answer» Correct Answer - C | |
| 63. |
The strongest acid amongst the following compound isA. `HCOOH`B. `CH_(3)CH_(2)CH (Cl) CO_(2)H`C. `ClCH_(2)CH_(2)CH_(2)COOH`D. `CH_(3)COOH` |
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Answer» Correct Answer - B Since `-I` effect decreases with distance, therefore, `CH_(3)CH_(2)CH (Cl) COOH` is a stronger acid than `ClCH_(2)CH_(2)COOH` |
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| 64. |
Acetic acid is obtained when:A. methyl alcohol is oxidised with `KMnO_(4)`B. calcium acetate is distilled in presence of calcium formateC. acetaldehyde is oxidised with `K_(2)Cr_(2)O_(7) and H_(2)SO_(4)`D. glycerol is heated with `H_(2)SO_(4)` |
| Answer» Correct Answer - C | |
| 65. |
Acetic acids exists in dimer state in benzene due toA. condensation reactionB. hydrogen bondingC. presence of carbonyl groupD. presence of` alpha`-hydrogen |
| Answer» Correct Answer - B | |
| 66. |
Which of the following is the strongest acid?A. `HCOOH (pK_(a) 3.77)`B. `C_(6)H_(5)COOH(pk_(a)4.22)`C. `CH_(3)COOH(pk_(a)4.71)`D. `CH_(3)CH_(2)COOH(pk_(a)4.88)` |
| Answer» Correct Answer - A | |
| 67. |
Formic acid is obtained when :A. calcium acetate is heated with conc. `H_(2)SO_(4)`B. glycerol is heated with oxalic acidC. acetaldehyde is oxidised with `K_(2)Cr_(2)O_(7) and H_(2)SO_(4)`D. calcium formate is heated with calcium acetate |
| Answer» Correct Answer - B | |
| 68. |
Acetic acid is treated with `Ca(OH)_(2)` and the product so obtained is subjected to dry distillation. The final product isA. ethanalB. ethanolC. propanalD. propanone |
| Answer» Correct Answer - D | |
| 69. |
The most suitable reagent for laboratory prepartion of acetyl chloride from acetic acid is:A. `PCl_(5)`B. HClC. `SOCl_(2)`D. `PCl_(3)` |
| Answer» Correct Answer - C | |
| 70. |
The reagent, which which distinguishes formic acid from acetic acid is:A. 2,4-dinitropbenyl hydrazineB. `HgCl_(2)`C. `C_(2)H_(5)Ona`D. `Hg_(2)Cl_(2)` |
| Answer» Correct Answer - B | |
| 71. |
Laevulinic acid is aA. `alpha-`Keto acidB. `beta-`Keto acidC. `gamma-`Keto acidD. `delta-`Keto acid |
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Answer» Correct Answer - C `gamma-`keto acid |
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| 72. |
Which of the following is not the functional isomer of monocarboxylic acid?A. AmideB. EsterC. Hydroxy aldehydeD. Hydroxy ketone |
| Answer» Correct Answer - A | |
| 73. |
Benzoyl chloride is prepared from benzoic acid byA. `Cl_(2)` ,hvB. `SO_(2)Cl_(2)`C. `SOCl_(2)`D. `Cl_(2),H_(2)O` |
| Answer» Correct Answer - C | |
| 74. |
The compound `P, Q and S` were separately subjected to nitration using `HNO_(3)//H_(2)SO_(4)`mixture. The major product formed in each case respectively isA. B. C. D. |
| Answer» Correct Answer - C | |
| 75. |
In a reaction involving ring substitution of `C_(6)H_(5)Y`, the major product is meta isomer. The group Y can beA. `-NH_(2)`B. `-COOH`C. `-CH_(3)`D. `-Cl` |
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Answer» Correct Answer - B `-COOH` group is meta directing whereas other groups given in the question are `o, p-` directing. |
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| 76. |
Statement-I: Benzoic acid on nitration will give m- nitrao benzoic acid. Because Statement-II: -COOH group will increase `e^(-)` density on meta position.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 - C | |
| 77. |
Hydrogenation of vegetable oils in the presence of finaly divided nickel as catalyst, the reaction is :A. enzyme catalysed reactionB. liquid catalysed reactionC. homogeneous catalystD. hetrogeneous catalyst |
| Answer» Correct Answer - D | |
| 78. |
Acetoacetic ester behaves asA. An unsaturated hydroxy compoundB. A keto compoundC. Both of these waysD. None of these |
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Answer» Correct Answer - C `underset("Acetoacetic ester (keto form)")(H_(3) C - overset(O)overset(||)(C) - CH_(2) - overset(O)overset(||)(C) - OC_(2)H_(5) ) hArr underset(("enolic form"))(H_(3) C - overset(OH)overset(|)(C) = CH - overset(O)overset(||)(C) - OC_(2)H_(5))` |
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| 79. |
This reaction takes place between two molecules of esters (same or different). One ester should have atleast one `alpha`-hydrogen atom which behaves as a reagent. The reaction is catalyzed by strong bas elike `C_(2)H_(5)barONa^(+)` in presence of `C_(2)H_(5)OH`. The product of this reaction is `beta`-ketoster: When two esters having `alpha`-hydrogen are subjected to Claisen condensation then we get:A. 4 cross productsB. 2 simple and 2 cross productsC. 3 cross products and 1 simple productsD. 4 simple products |
| Answer» Correct Answer - B | |
| 80. |
This reaction takes place between two molecules of esters (same or different). One ester should have atleast one `alpha`-hydrogen atom which behaves as a reagent. The reaction is catalyzed by strong bas elike `C_(2)H_(5)barONa^(+)` in presence of `C_(2)H_(5)OH`. The product of this reaction is `beta`-ketoster: Which of the following esters will undergo Claisen condensation to form acetoacetic ester ?A. `CH_(3)COOC_(2)H_(5)`B. `C_(6)H_(5)COOC_(2)H_(5)`C. `HCOOC_(2)H_(5)`D. None of these |
| Answer» Correct Answer - A | |
| 81. |
`HC -= N + HCl overset(AlCl_(3))rarr X underset(AlCl_(3))overset(C_(6)H_(6))rarr Y overset(H_(2)O)rarr Z` In the above sequence X, Y, Z isA. `CH_(2)NCl, C_(6)H_(5)Cl, C_(6)H_(5)OH`B. `CHCl = NH, C_(6)H_(5)CH = NH, C_(6)H__(5)CHO`C. `CHCl = NH, C_(6)H_(5)Cl, C_(6)H_(5)OH`D. Benzophenone |
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Answer» Correct Answer - B `H - C -= N + overset(delta+)(H) overset(" "delta-)(Cl)overset(AlCl_(3))rarr H - underset(Cl)underset(|)(C) - NH underset(C_(6)H_(6))overset(-HCl)rarr C_(6)H_(5)CH = NH underset(-NH_(3))overset(H_(2)O)rarr underset("Benzaldehyde")(C_(6)H_(5)CHO)` |
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| 82. |
Chemically Banana oil isA. Isoamyl acetaeB. Ethyl butyrateC. Octyl acetateD. Mixture of hydrocarbons containing banana leaves |
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Answer» Correct Answer - A Factual Questions |
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| 83. |
Which of the following compound is known as oil of wintergreen ?A. Methyl salicylateB. Phenyl salicylicC. Ethyl salicylateD. Ethyl, `p-`hydroxybenzoate |
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Answer» Correct Answer - A Methyl salicylate |
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| 84. |
On vigrous oxidation by permangnate solution, `(CH_(3))_(2)C=CH-CH_(2)CH_(3)` gives :A. `CH_(3)-underset(CH_(3))underset(|)overset(OH)overset(|)C-overset(OH)overset(|)"CH-CH_(2)CH_(3)`B. C. D. |
| Answer» Correct Answer - D | |
| 85. |
Electrolysis of aqueous solution of `CH_(3)COOK` givesA. `CH_(4)`B. `C_(2)H_(4)`C. `C_(2)H_(6)`D. `C_(2)H_(2)` |
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Answer» Correct Answer - C `2CH_(3)COOK + 2H_(2)O overset("Electrolysis")rarr H_(3)C - CH_(3) + 2NaOH + 2CO_(2) + H_(2)O` |
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| 86. |
Which of the following acids has the smallest dissociation constant ?A. `CH_(3)CHFCOH`B. `FCH_(2)CH_(2)COOH`C. `BrCH_(2)CH_(2)COOH`D. `CH_(3)CHBrCOOH` |
| Answer» Correct Answer - C | |
| 87. |
Which of the following acids has the smallest dissociation constant ?A. `CH_(3)CHFCOOH`B. `FCH_(2)CH_(2)COOH`C. `BrCH_(2)CH_(2)COOH`D. `CH_(3)CHBrCOOH` |
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Answer» Correct Answer - C `BrCH_(2)CH_(2)COOH` is least acidic or has less `K_(a)` i.e., dissociation constant. It is (a) due to lesser `-I` effect of Br than F and (b) Br atom further away from `-COOH` group |
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| 88. |
Which of the following acids has the smallest dissociation constant?A. `CH_(3)CHFCOOH`B. `FCH_(2)CH_(2)COOH`C. `BrCH_(2)CH_(2)COOH`D. `CH_(3)CHBrCOOH` |
| Answer» Correct Answer - C | |
| 89. |
From the following values of dissociation constant of four acids which value represents the strongest acid ?A. `2 xx 10^(-2)`B. `0.02 xx 10^(-1)`C. `3 xx 10^(-4)`D. `2 xx 10^(-4)` |
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Answer» Correct Answer - A Greater is the dissociation constant, greater is the acidic strength |
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| 90. |
Acid present in tomatoes isA. Lactic acidB. Oxalic acidC. Citric acidD. Tartaric acid |
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Answer» Correct Answer - C Factual Questions |
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| 91. |
For the Hunsdiecker decarboxylation reaction, which of the following is false :A. It involves reaction between silver salt of an acid and `Br_2`.B. It is used to prepare alkyl bromide.C. It of the type :`RCH_2 COO Ag + Br_2 rarr RCH_2 Br + CO_2 + AgBr`D. It is of the type : `RCH_2 COO Ag rarr RCH_3 + CO_2 + AgBr`. |
| Answer» Correct Answer - D | |
| 92. |
In the above reaction, product P isA. B. C. D. `C_(6)H_(5) - overset(O)overset(||)(C) - C_(6)H_(5)` |
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Answer» Correct Answer - B `C_(6)H_(5) Mg Br underset((ii) H_(3)O^(+))overset((i) CO_(2))rarr underset((P))(C_(6) H_(5) COOH)` |
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| 93. |
Which of the following is most effective for the hydrolysis of an ester?A. Dilute alkaliB. Dilute acidC. WaterD. Acid or alkal |
| Answer» Correct Answer - A | |
| 94. |
Acetamide and `NaOBr//OH^(-)` produceA. EthanamineB. MethanamineC. `CH_(3)CN`D. `NH_(3)` |
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Answer» Correct Answer - B Hoffman Bromamide reaction `CH_(3) - overset(O)overset(||)(C) - NH_(2) + Br_(2) + 4 NaOH rarr CH_(3) NH_(2) + Na_(2)CO_(3) + 2NaBr + H_(2)O` |
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| 95. |
Which of the following compounds is not an aliphatic acid ?A. stearic acidB. palmitic acidC. oleic acidD. phenyl acetic acid |
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Answer» Correct Answer - D `C_(6)H_(5) - CH_(2) - COOH` contains a benzene ring, therefore it is not an aliphatic acid |
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| 96. |
Product of this reaction will be :A. B. C. D. |
| Answer» Correct Answer - C | |
| 97. |
The product formed in above reaction is:A. B. C. D. |
| Answer» Correct Answer - A | |
| 98. |
Which of the following orders of relative strengths of acids is correct ?A. `FCH_(2)COOH gt ClCH_(2)COOH gt BrCH_(2) COOH`B. `ClCH_(2)COOH gt BrCH_(2)COOH gt FCH_(2)COOH`C. `BrCH_(2)COOH gt ClCH_(2)COOH gt FCH_(2) COOH`D. `ClCH_(2)COOH gt FCH_(2)COOH gt BrCH_(2)COOH` |
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Answer» Correct Answer - A Acidity decreases with the decrease in electronegativity of halogen i.e., `FCH_(2) COOH gt ClCH_(2) COOH gt BrCH_(2)COOH` |
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| 99. |
The correct order of strengths of the carboxylic acids A. `II gt III gt I`B. `I gt II gt III`C. `III gt II gt I `D. `II gt I gt III ` |
| Answer» Correct Answer - A | |
| 100. |
Dichlorobenzoic acid `overset("Mononitration")to`Product ( only one) . The structure of reactant can be:A. B. C. D. |
| Answer» Correct Answer - A | |