Amines PYQs Set 4 (PDF)

Set 4 of 10 · Questions 91-120 of 273

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Mere Teacher · Previous Year Questions NEET Chemistry · Amines · Set 4 (Q91-120)
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91. $In carbylamine test for primary amines the resulting foul smelling product is$ (1) $CH_{3} NC$ (2) $COCl_{2}$ (3) $CH_{3} NCl_{2}$ (4) $CH_{3} CN$ 92. $Arrange the following amines in the decreasing order of basicity:$ (1) $I > II > III$ (2) $III>I>II$ (3) $III>II>I$ (4) $I>III>I$ 93. $Reagent, 1 -naphthylamine and sulphanilic acid in acetic acid is used for the detection of$ (1) $N_{2} O$ (2) $NO_{3}^{-}$ (3) $NO$ (4) $NO_{2}^{-}$ 94. $In the following reaction, ‘A’ is'A' Major product.$ (1) (2) (3) (4) 95. $In the above conversion the correct sequence of reagents to be added is$ (1) $(i) K M n O_{4}, (ii) B r_{2} /Fe, (iii) Fe/ H^{+}, (iv) C 1_{2}$ (2) $(i) B r_{2} /Fe, (ii) Fe/ H^{+}, (iii) K M n O_{4}, (iv) C 1_{2}$ (3) $(i) Fe/H+, (ii) HONO, (iii) CuCl, (iv) K M n O_{4} (v) B r_{2}$ (4) $(i) B r_{2} /Fe, (ii) Fe/ H^{+}, (iii) HONO, (iv) CuCl (v) K M n O_{4}$ 96. $Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R Assertion A : Aniline on nitration yields ortho, meta & para nitro derivatives of aniline. Reason R: Nitrating mixture is a strong acidic mixture. choose the correct answer from the options given below$ (1) $Both A and R are true and R is the correct explanation of A$ (2) $Both A and R are true but R is NOT the correct explanation of A$ (3) $A is true but R is false$ (4) $A is false but R is true$ 97. $The polymer obtained from the following reactions is (i) NaN O_{2} / H_{2} O^{+} (ii) Polymerisation$ (1) $[- C (= O) - (C H_{2})_{4} - N H -]_{n}$ (2) $[- H N - C (= O) - (C H_{2})_{4} - C (= O) - N H -]_{n}$ (3) $[- O - (C H_{2})_{4} - C (= O) -]_{n}$ (4) $[- O - C (= O) - (C H_{2})_{4} - O -]_{n}$ 98. $The major product ' Z' in the reaction sequence is$ (1) (2) (3) (4) 99. $Consider the following sequence of reactions. 4-Nitrotoluene (i) Sn, HCl /Δ (ii) pH neutralisation (A) (i) (H_{3} CCO)_{2} O (ii) Br_{2} / AcOH (B) Assuming that the reaction proceeds to completion, then 137 mg of 4 -nitrotoluene will produce____mg of B . (Given molar mass in gmol^{- 1} H : 1, C : 12, N : 14, O : 16, Br : 80)$ (1) $208$ (2) $301$ (3) $228$ (4) $146$ 100. $' A' is a neutral organic compound (M. F : C_{8} H_{9} ON). On treatment with aqueous Br_{2} / HO^{(-)}, ' A ' forms a compound ' B ' which is soluble in dilute acid. ' B ' on treatment with aqueous NaNO_{2} / HCl (0 - 5^{\circ} C) produces a compound ' C ' which on treatment with CuCN / NaCN produces ' D '. Hydrolysis of ' D ' produces ' E ' which is also obtainable from the hydrolysis of ' A^{’} .^{’} E^{’} on treatment with acidified KMnO_{4} produces^{’} F^{’} . ' F^{’}' contains two different types of hydrogen atoms. The structure of ' A ' is$ (1) (2) (3) (4) 101. $Amines behave as$ (1) $aprotic acid$ (2) $neutral compound$ (3) $Lewis acids$ (4) $Lewis base.$ 102. $Aniline does not undergo$ (1) $nitration$ (2) $sulphonation$ (3) $Friedel - Crafts reaction$ (4) $bromination.$ 103. $Reaction of propanamide with ethanolic sodium [NEET 2020]$ (1) $ethylamine$ (2) $methylamine$ (3) $propylamine$ (4) $aniline$ 104. $An amine on reaction with benzenesulphonyl chloride produces a compound insoluble in alkaline solution. This amine can be prepared by ammonolysis of ethyl chloride. The correct structure of amine is:$ (1) $C H_{3} C H_{2} C H_{2} - NH - C H_{2} C H_{3}$ (2) $C H_{3} C H_{2} C H_{2} NHC H_{3}$ (3) $C_{6} H_{5} - NH - C H_{2} C H_{2} C H_{3}$ (4) $C H_{3} C H_{2} N H_{2}$ 105. $Which of the following is least basic?$ (1) $(CH_{3} CO) N H C_{2} H_{s}$ (2) $(C_{2} H_{5})_{3} N$ (3) $(CH_{3} CO)_{2} N H$ (4) $(C_{2} H_{5})_{2} N H$ 106. $'X'$ (1) (2) (3) (4) 107. $Gabriel phthalimide synthesis is used in the preparation of primary amines from phthalimide, which of the following reagent is not used during the process?$ (1) $NaOH$ (2) $HCl$ (3) $KOH$ (4) $none of these$ 108. $H_{3} CCONH_{2} + Br_{2} + 4 NaOH \to Y + Na_{2} CO_{3} + 2 NaBr + 2 H_{2} O What is Y in the above reaction?$ (1) $H_{3} CCH_{2} NH_{2}$ (2) $H_{3} CNH_{2}$ (3) $H_{3} CCOBr$ (4) $HCONH_{2}$ 109. $Identify correct statements : (A) Primary amines do not give diazonium salts when treated with NaNO_{2} in acidic condition. (B) Aliphatic and aromatic primary amines on heating with CHCl_{3} and ethanolic KOH form carbylamines. (C) Secondary and tertiary amines also give carbylamine test. (D) Benzenesulfonyl chloride is known as Hinsberg's reagent. (E) Tertiary amines reacts with benzenesulfonyl chloride very easily. Choose the correct answer from the options given below:$ (1) $(A) and (B) only$ (2) $(D) and (E) only$ (3) $(B) and (D) only$ (4) $(B) and (C) only$ 110. $Given below are two statements: Statement I: The dipole moment of R-CN is greater than R-NC and R-NC can undergo hydrolysis under acidic medium to produce Statement II: R-CN hydrolyses under acidic medium to produce a compound which on treatment with SOCl_{2}, followed by the addition of NH_{3} gives another compound (x) . This compound (x) on treatment with NaOCl / NaOH gives a product, that on treatment with CHCl_{3} / KOH /Δ produces R-NC. In the light of the above statements, choose the correct answer from the options given below$ (1) $Both Statement I and Statement II are false$ (2) $Statement I is false but Statement II is true$ (3) $Both Statement I and Statement II are true$ (4) $Statement I is true but Statement II is false$ 111. $Which of the following compounds can be prepared in good yield by Gabriel phthalimide synthesis?$ (1) (2) (3) (4) $CH_{3} - CH_{2} - NHCH_{3}$ 112. $Given below are two statements : Statement (I) : All the following compounds react with p-toluenesulfonyl chloride. C_{6} H_{5} NH_{2} (C_{6} H_{5})_{2} NH (C_{6} H_{5})_{3} N Statement (II) : Their products in the above reaction are soluble is aqueous NaOH . In the light of the above statements, choose the correct answer from the options given below$ (1) $Statement I is false but Statement II is true$ (2) $Statement I is true but Statement II is false$ (3) $Both Statement I and Statement II are true$ (4) $Both Statement I and Statement II are false$ 113. $Compound 'B' is$ (1) (2) (3) (4) 114. $Which isomer among the following has highest boiling point?$ (1) $n-Butylamine$ (2) $Ethyldimethylamine$ (3) $tert Butylamine$ (4) $Diethylamine$ 115. $The test that distinguishes primary amines from other amines is$ (1) $Iodoform test$ (2) $Victor Meyer test$ (3) $Lucas test$ (4) $Carbylamine test$ 116. $A student has been given a compound " x " of molecular formula- C_{6} H_{7} N . ' x' is sparingly soluble in water. However, on addition of dilute mineral acid, ' x' becomes soluble in water. ' x' when treated with CHCl_{3} and KOH (alc),^{’} y' is produced. ' y' has a specific unpleasant smell. On treatment with benzenesulphonyl chloride, ' x' gives a compound ' z' which is soluble in alkali. The number of different " H " atoms present in ' z' is:-$ (1) $8$ (2) $4$ (3) $5$ (4) $7$ 117. $One of the following amides will not undergo Hoffmann bromamide reaction.$ (1) $CH_{3} CONHCH_{3}$ (2) $CH_{3} CONH_{2}$ (3) $CH_{3} CH_{2} CONH_{2}$ (4) $C_{6} H_{5} CONH_{2}$ 118. $'A' is$ (1) (2) (3) (4) 119. $Which of the following amines undergoes acylation reaction?$ (1) $Ethyldimethylamine$ (2) $N -Methylaniline$ (3) $N, N -Dimethylmethanamine$ (4) $N, N -Dimethylaniline$ 120. $The product formed from the following reaction sequence is [NEET 2022] C_{6} H_{5} CN (i) LiAlH_{4}, H_{2} O (ii) NaNO_{2} + HCl (iii) H_{2} O$ (1) (2) (3) (4)