Amines PYQs Set 2 (PDF)

Set 2 of 10 · Questions 31-60 of 273

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Mere Teacher · Previous Year Questions NEET Chemistry · Amines · Set 2 (Q31-60)
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31. $Which of the following amine will give the carbylamine test? [NEET 2020]$ (1) (2) (3) (4) 32. $Among the following structures, which will show the most stable enamine formation ? (Where Me is - C H_{3})$ (1) (2) (3) (4) 33. $A compound ‘X’ on treatment with B r_{2} / NaO H_{2}, provided C_{3} H_{9} N, which gives positive carbylamine test. Compound ‘X’ is :$ (1) $C H_{3} COC H_{2} NHC H_{3}$ (2) $C H_{3} C H_{2} COC H_{2} N H_{2}$ (3) $C H_{3} C H_{2} C H_{2} CON H_{2}$ (4) $C H_{3} CON (C H_{3})_{2}$ 34. $Given below are two statements: Statement I: Griss-Ilosvay test is used for the detection of nitrite ion, which involves the use of sulphanilic acid and α -naphthylamine reagent. Statement II: In the above test, sulphanilic acid is diazotized by the acidified nitrite ion, which on further coupling with α -naphthylamine forms an azo-dye. In the light of the above statements, choose the correct answer from the options given below$ (1) $Both Statement I and Statement II are true$ (2) $Both Statement I and Statement II are false$ (3) $Statement I is false but Statement II is true$ (4) $Statement I is true but Statement II is false$ 35. $Cyclohexylamine and aniline can be distinguished by$ (1) $Hinsberg test$ (2) $Carbylamine test$ (3) $Lassaigne test$ (4) $Azo dye test$ 36. $Maximum number of molecules of CH_{3} I that can react with a molecule of CH_{3} NH_{2} are$ (1) $3$ (2) $4$ (3) $2$ (4) $1$ 37. $The correct order of basic nature in aqueous solution for the bases NH_{3}, H_{2} N - NH_{2}, CH_{3} CH_{2} NH_{2}, (CH_{3} CH_{2})_{2} NH and (CH_{3} CH_{2})_{3} N is :$ (1) $NH_{3} < H_{2} N - NH_{2} < (CH_{3} CH_{2})_{3} N < CH_{3} CH_{2} NH_{2} < (CH_{3} CH_{2})_{2} NH$ (2) $H_{2} N - NH_{2} < NH_{3} < (CH_{3} CH_{2})_{3} N < CH_{3} CH_{2} NH_{2} < (CH_{3} CH_{2})_{2} NH$ (3) $NH_{2} - NH_{2} < NH_{3} < CH_{3} CH_{2} NH_{2} < (CH_{3} CH_{2})_{3} N < (CH_{3} CH_{2})_{2} NH$ (4) $NH_{3} < H_{2} N - NH_{2} < CH_{3} CH_{2} NH_{2} < (CH_{3} CH_{2})_{2} NH < (CH_{3} CH_{2})_{3} N$ 38. $Which of the following reaction is an example of ammonolysis?$ (1) $C_{6} H_{5} COCl + C_{6} H_{5} NH_{2} ⟶ C_{6} H_{5} CONHC_{6} H_{5}$ (2) $C_{6} H_{5} CN ⟶ [H] C_{6} H_{5} CH_{2} CH_{2} NH_{2}$ (3) $C_{6} H_{5} NH_{2} ⟶ HCl C_{6} H_{5} NH_{3} Cl^{-}$ (4) $C_{6} H_{5} CH_{2} Cl + NH_{3} ⟶ C_{6} H_{5} CH_{2} NH_{2}$ 39. $Identify the major product C formed in the following reaction sequence: [NEET 2024] CH_{3} - CH_{2} - CH_{2} - I \to NaCN A CH_{3} - CH_{2} - CH_{2} - CN \to OH^{-} Partial hydrolysis B \to NaOH Br_{2} C (Major)$ (1) $propylamine$ (2) $butylamine$ (3) $butanamide$ (4) $α -bromobutanoic acid$ 40. $Arrange the following in the increasing order of their basic strengths : CH_{3} NH_{2}, (CH_{3})_{2} NH, (CH_{3})_{3} N, NH_{3}$ (1) $NH_{3} < (CH_{3})_{3} N < CH_{3} NH_{2} < (CH_{3})_{2} NH$ (2) $(CH_{3})_{3} N < NH_{3} < CH_{3} NH_{2} < (CH_{3})_{2} NH$ (3) $CH_{3} NH_{2} < (CH_{3})_{2} NH < (CH_{3})_{3} N < NH_{3}$ (4) $NH_{3} < (CH_{3})_{3} N < (CH_{3})_{2} NH < CH_{3} NH_{2}$ 41. $Primary, secondary and tertiary amines can be separated using :-$ (1) $Para-Toluene sulphonyl chloride$ (2) $Chloroform and KOH$ (3) $Benzene sulphonic acid$ (4) $Acetyl amide$ 42. $Which of the following is not a correct statement for primary aliphatic amines?$ (1) $The intermolecular association in primary amines is less than the intermolecular association in secondary amines.$ (2) $Primary amines on treating with nitrous acid solution form corresponding alcohols except methyl amine.$ (3) $Primary amines are less basic than the secondary amines.$ (4) $Primary amines can be prepared by the Gabriel phthalimide synthesis.$ 43. $An organic compound (P) on treatment with aqueous ammonia under hot condition forms compound (Q) which on heating with Br_{2} and KOH forms compound (R) having molecular formula C_{6} H_{7} N . Names of P, Q and R respectively are.$ (1) $Phenylethanoic acid, phenylethanamide, benzamine$ (2) $Benzoic acid, 4-methylbenzamide, 4-methylaniline$ (3) $Toluic acid, methylbenzamide, 2-methylaniline$ (4) $Benzoic acid, benzamide, aniline$ 44. $Ethylamine (C_{2} H_{5} N H_{2}) can be obtained from N-ethylphthalimide on treatment with :$ (1) $N H_{2} N H_{2}$ (2) $Ca H_{2}$ (3) $NaB H_{4}$ (4) $H_{2} O$ 45. $Which of the following reactions is appropriate for converting acetamide to methanamine? [NEET 2017]$ (1) $Carbylamine reaction$ (2) $Hofmann hypobromamide reaction$ (3) $Stephen's reaction$ (4) $Gabriel's phthalimide synthesis$ 46. $The method by which aniline cannot be prepared is$ (1) $nitration of benzene followed by reduction with Sn and conc. HCl$ (2) $degradation of benzamide with bromine in alkaline solution$ (3) $reduction of nitrobenzene with H_{2} / Pd in ethanol$ (4) $potassium salt of pthalimide treated with chlorobenzene followed by the hydrolysis with aqueous NaOH solution.$ 47. $The reagent ' R' in the given sequence of chemical reaction is [NEET 2021]$ (1) $CuCN/KCN$ (2) $H_{2} O$ (3) $CH_{3} CH_{2} OH$ (4) $HI$ 48. $Compound ' P ' undergoes the following sequence of reactions:^{’} P^{’} is:$ (1) (2) (3) (4) 49. $Which of the following reactions will not give primary amine as the product? [ NEET 2023]$ (1) $CH_{3} CN \to (i) LiAH_{4} (i) H_{3} O^{+} Product$ (2) $CH_{3} NC \to (i) LiAH_{4} (i) H_{3} O^{+} Product$ (3) $CH_{3} CONH_{2} \to (i) LiAlH_{4} (i) H_{3} O^{+} Product$ (4) $CH_{3} CONH_{2} \to Br_{2} / KOH Product$ 50. $Which one of the following gives amine on heating with amide?$ (1) $Br_{2} in aqueous KOH$ (2) $Br_{2} in alcoholic KOH$ (3) $Cl_{2} in sodium$ (4) $Sodium in ether$ 51. $Which of the following amines on heating with chloroform generate foul smelling product?$ (1) $Ethanamine$ (2) $Ethylmethyl amine$ (3) $Ethyldimethyl amine$ (4) $Diethylmethyl amine$ 52. $Consider the following sequence of reactions The product 'B' is$ (1) (2) (3) (4) 53. $The correct order of basic strength of the following amines is$ (1) $I > III > IV > II$ (2) $II > I > IV > III$ (3) $I > II > III > IV$ (4) $I > III > II > IV$ 54. $Propanenitrile LiAlH_{4} A CHCl_{3} / alcoholic KOH Δ B Conversion of A to B is an example of the reaction$ (1) $Reimer-Tiemann reaction$ (2) $Carbyl amine reaction$ (3) $Stephen reaction$ (4) $Sandmeyer reaction.$ 55. $Compound A from the following reaction sequence is :$ (1) $Benzoic Acid$ (2) $Aniline$ (3) $Salicylic Acid$ (4) $Phenol$ 56. $Which one of the following gives a foul-smelling substance when treated with chloroform and alcoholic KOH ?$ (1) (2) (3) (4) 57. $The major product formed in the following reaction is$ (1) (2) (3) (4) 58. $The basicity of aniline is less than that of cyclohexylamine. This is due to$ (1) $+ R effect of - NH_{2} group$ (2) $- I effect of - NH_{2} group$ (3) $- R effect of - NH_{2} group$ (4) $hyperconjugation effect.$ 59. $Which one of the following reactions does not occur?$ (1) (2) (3) (4) 60. $The product (P) formed from the following multistep reaction is:$ (1) (2) (3) (4)