Carboxylic Acids & Derivatives PYQs Set 3 (PDF)

Set 3 of 6 · Questions 61-90 of 177

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Mere Teacher · Previous Year Questions NEET Chemistry · Carboxylic Acids & Derivatives · Set 3 (Q61-90)
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61. $Which of the following set of compounds react with NaHCO_{3} ?$ (1) $I, II, III, IV$ (2) $I, II, III only$ (3) $III, IV only$ (4) $I, III, IV only$ 62. $Which of the following is the correct decreasing order of acidic strength of(i) methanoic acid (ii) ethanoic acid (iii) propanoic acid (iv) butanoic acid$ (1) $(i) > (ii) > (iii) > (i v)$ (2) $(ii) > (iii) > (i v) > (i)$ (3) $(i) > (i v) > (iii) > (ii)$ (4) $(i v) > (i) > (iii) > (ii)$ 63. $Trichloroacetaldehyde was subjected to Cannizzaro's reaction by using NaOH. The mixture of the products contain sodium trichloroacetate ion and another compound. The other compound is :$ (1) $2, 2, 2-Trichloroethanol$ (2) $Trichloromethanol$ (3) $2, 2, 2-Trichloropropanol$ (4) $Chloroform$ 64. $The preferred reagent for the following conversion is CH_{3} CH_{2} COOH \to CH_{3} CH_{2} COC l$ (1) $HCl$ (2) $HOCl$ (3) $SOCl_{2}$ (4) $NaOCl$ 65. $In the reaction, if X is the reagent and Y is the product, which of the following is not feasible?$ (1) $X = Conc. HNO_{3} + Con. H_{2} SO_{4}; Y = 3 - Nitrobenzoic acid$ (2) $X = Br_{2} / Fe Y = 3 - Bromobenzoic acid$ (3) $X = NaOH, CaO Y = Benzene$ (4) $X = CH_{3} Cl / AlCl_{3} Y = 3 - Methylebenzoic acid$ 66. $When C H_{2} =CH-COOH is reduced with L i A l H_{4}, the compound obtained will be:$ (1) $C H_{3} - C H_{2} -COOH$ (2) $C H_{2} =CH- C H_{2} OH$ (3) $C H_{3} - C H_{2} - C H_{2} OH$ (4) $C H_{3} - C H_{2} -CHO.$ 67. $In which of the following, the number of carbon atoms does not remain same when carboxylic acid is obtained by oxidation?$ (1) $C H_{3} C O C H_{3}$ (2) $C C l_{3} C H_{2} C H O$ (3) $C H_{3} C H_{2} C H_{2} O H$ (4) $C H_{3} C H_{2} C H O$ 68. $In the reaction given below The product 'X' is :$ (1) (2) (3) (4) 69. $3-hydroxy butanal is formed when X-reacts with Y in dilute Z solution. What are X, Y and Z ? X Y Z$ (1) $CH3CHO, (CH3)2CO, NaOH$ (2) $CH3CHO, (CH3)3COH, NaCl$ (3) $(CH3)2CO, (CH3)2CO, HCl$ (4) $CH3CHO, CH3CHO, NaOH$ 70. $Which of the following compounds will give silver mirror with ammoniacal silver nitrate? A. Formic acid B. Formaldehyde C. Benzaldehyde D. Acetone Choose the correct answer from the options given below :$ (1) $A, B and C only$ (2) $C and D only$ (3) $B and C only$ (4) $A only$ 71. $Which dicarboxylic acid in presence of a dehydrating agent is least reactive to give an anhydride ?$ (1) (2) (3) (4) 72. $Which of the following reagents will convert isobutyraldehyde to the corresponding acid? (HNO_{3} NH_{2} NH_{2} / OH^{-} 2 (Ag (NH_{3})_{2}))^{+} NaOH I II III IV$ (1) $I, III$ (2) $I, II$ (3) $II, IV$ (4) $III, IV$ 73. $Arrange the following in increasing order of pK_{a} values$ (1) $C < B < A < D$ (2) $B < D < C < A$ (3) $A < D < B < C$ (4) $A < B < C < D$ 74. $Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their [NEET 2018]$ (1) $more extensive association of carboxylic acid via van der Waals' force of attraction$ (2) $formation of carboxylate ion$ (3) $formation of intramolecular H -bonding$ (4) $formation of intermolecular H-bonding$ 75. $The major product formed, when salicylaldehyde is reacted with 2 equivalents of bromine in glacial acetic acid at 0^{\circ} C .$ (1) (2) (3) (4) 76. $D - (+)-Glyceraldehyde i) HCN ii) H_{2} O/H^{+} iii) HNO_{3} The products formed in the above reaction are$ (1) $One optically active and one meso product$ (2) $Two optically inactive products$ (3) $Two optically active products$ (4) $One optically inactive and one meso product$ 77. $Find the suitable product for the following reaction. R - CO_{2} H (i) B_{2} H_{6} (ii) H_{2} O / H^{\oplus}$ (1) $R - CHO$ (2) (3) $R - CO_{2} R$ (4) 78. $Reaction by which benzaldehyde cannot be prepared$ (1) $Benzene + CO + HCl in presence of anhydrous AlC l_{3}$ (2) $Benzoic acid + Zn/Hg and conc. HCl$ (3) $Toluene + Cr O_{2} C l_{2} in C S_{2} followed by H_{3} O^{+}$ (4) $Benzoyl chloride + H_{2} in presence of Pd- BaS O_{4}$ 79. $Match the LIST-I with LIST-II List-I (Reagents) (A) NH_{2} - NH_{2}, KOH (B) Ag (NH_{3})_{2} OH (C) Aq. CuSO_{4}, Sodium potassium tartarate, KOH (D) Zn - Hg, HCl List-II (Name of reaction involving carbonyl compounds) (I) Tollen’s Test (II) Clemmensen Reduction (III) Wolff-Kishner Reduction (IV) Fehling’s Test Choose the correct answer from the options given below:$ (1) $A-II, B-I, C-IV, D-III$ (2) $A-III, B-IV, C-I, D-II$ (3) $A-III, B-I, C-IV, D-II$ (4) $A-IV, B-III, C-II, D-I$ 80. $Match List I and List II : List I (1) O \| \| R - C - Cl \to R - CHO (2) R - CH_{2} - COOH \to R - CH - COOH \| Cl (3) O \| \| R - C - NH_{2} \to R - NH_{2} (4) O \| \| R - C - CH_{3} \to R - CH_{2} - CH_{3} List II (i) Br_{2} / NaOH (ii) H_{2} / Pd - BaSO_{4} (iii) Zn (Hg) / Conc . HCl (iv) C l_{2} / Red P, H_{2} O Choose the correct answer from the options given below:$ (1) $(1)-(ii), (2)-(i), (3)-(iv), (4)-(iii)$ (2) $(1)-(iii), (2)-(iv), (3)-(i), (4)-(ii)$ (3) $(1)-(iii), (2)-(i), (3)-(iv), (4)-(ii)$ (4) $(1)-(ii), (2)-(iv), (3)-(i), (4)-(iii)$ 81. $The correct order of acidic strength of the major products formed in the given reactions, is :(A) PhNH_{2} (1) NaNO_{2} + HCI (< 5^{\circ} C) (2) CuCN ARKS (3) \frac{H _{3} O ^{+}}{Δ} (A) (B) CH_{3} CH_{2} CHO (Ag (NH_{3})_{2})^{+}, OH^{-} Δ (B) (C) CH4+O2 (i) (ii) Na2Cr2O7H+C(D) PhCH_{2} MgBr + CO_{2} Dry ether H_{3} O^{+} (D) Choose the correct answer from the options given below :$ (1) $(A) > (D) > (B) > (C)$ (2) $(C) > (A) > (D) > (B)$ (3) $(C) > (B) > (A) > D)$ (4) $(A) > (D) > (C) > (B)$ 82. $Ketones [R C O R_{1}] where R = R_{1} = a l k y l group. It can be obtained in one step by$ (1) $oxidation of tertiary alcohol$ (2) $reaction of acid halide with alcohols$ (3) $hydrolysis of esters$ (4) $oxidation of primary alcohol.$ 83. $The above reaction is known as$ (1) $Friedel-Craft's reaction$ (2) $Kolbe-Schmidt reaction$ (3) $Hell-Volhard-Zelinsky reaction$ (4) $Cannizzaro reaction$ 84. $Conversion of esters to aldehydes can be accomplished by$ (1) $Stephen reduction$ (2) $Rosenmund reduction$ (3) $Reduction with lithium aluminium hydride$ (4) $Reduction with disobutyl aluminium hydride$ 85. $Consider the following reactions. From these reactions which reaction will give carboxylic acid as a major product? (A) R - C \equiv N (i) H + / H_{2} O mild condition (B) R - MgX (i) CO_{2} (ii) H_{3} O^{+} (C) R - C \equiv N (i) SnCl_{2} / HCl (ii) H_{3} O^{+} (D) R \cdot CH_{2} \cdot OH PCC (E) C_{6} H_{5} COCl (i) H_{2} ∣ Pd-BaSO_{4} (ii) Br_{2} water Choose the correct answer from the options given below:$ (1) $A, B and E only$ (2) $A and D only$ (3) $B, C and E only$ (4) $B and E only$ 86. $The main constituent of vinegar is______$ (1) $formic acid$ (2) $oxalic acid$ (3) $nitric acid$ (4) $acetic acid$ 87. $'A' and 'B' in the above reactions are:$ (1) (2) (3) (4) 88. $An optically active alkyl halide C_{4} H_{9} Br [A] reacts with hot KOH dissolved in ethanol and forms alkene [B] as major product which reacts with bromine to give dibromide [C] . The compound [C] is converted into a gas [D] upon reacting with alcoholic NaNH_{2} . During hydration 18 gram of water is added to 1 mole of gas [D] on warming with mercuric sulphate and dilute acid at 333 K to form compound [E]. The IUPAC name of compound [E] is:$ (1) $Butan-2-ol$ (2) $But-2-yne$ (3) $Butan-2-one$ (4) $Butan-1-al$ 89. $The product " P " in the above reaction is:$ (1) (2) (3) (4) 90. $Iodoform can be prepared from all except :$ (1) $Ethyl methyl ketone$ (2) $Isopropyl alcohol$ (3) $3-Methyl-2-butanone$ (4) $Isobutyl alcohol$