Practice Questions

Q47. In the above reactions, product A and product B respectively are: JEE Main 2021 (20 Jul Shift 2) JEE Main Previous Year Paper (1) (2) (3) (4)

Q47.In the following sequence of reactions, the final product D is: (1) (2) (3) (4)

Q47.Which one of the following is the major product of the given reaction? JEE Main 2021 (27 Aug Shift 2) JEE Main Previous Year Paper (1) (2) (3) (4)

Q47. Hydrolysis−A → B (C4H8 Cl2) 373 K (C4H8O) B reacts with Hydroxyl amine but does not give Tollen's test. Identify A and B. (1) 2, 2 -Dichlorobutane and Butanal (2) 2, 2 -Dichlorobutane and Butan- 2 -one (3) 1, 1 -Dichlorobutane and 2-Butanone (4) 1, 1 -Dichlorobutane and Butanal JEE Main 2021 (26 Feb Shift 1) JEE Main Previous Year Paper

Q47.Which one of the following compounds will liberate CO2, when treated with NaHCO3 ? (1) ⊕ ⊝ (2) ⊕ ⊝ CH33 NH Cl CH34 N OH (3) (4) CH3NH2

Q47.An organic compound A(C6H6O) gives dark green colouration with ferric chloride. On treatment with CHCl3 and KOH, followed by acidification gives compound B. Compound B can also be obtained from compound C on reaction with pyridinium chlorochromate (PCC). Identify A, B and C. (1) (2) (3) (4)

Q47.Compound A is converted to B on reaction with CHCl3 and KOH. The compound B is toxic and can be decomposed by C. A, B and C respectively are: (1) primary amine, nitrile compound, conc. HCl (2) secondary amine, isonitrile compound, conc. NaOH (3) primary amine, isonitrile compound, conc. HCl (4) secondary amine, nitrile compound, conc. NaOH

Q47.A and B in the following reactions are: (1) (2) (3) (4)

Q47.Which one of the following reactions will not form acetaldehyde? CrO3−H2 SO4 (1) (2) CH2 = CH2 + O2 Pd(II)/H2OCu(II)− → CH3 CH2 OH > (4) CH3 CH2 OH 573CuK > (3) CH3 CN i) DIBAL−Hii )H2O

Q47. The structure of X is: JEE Main 2021 (16 Mar Shift 2) JEE Main Previous Year Paper (1) (2) (3) (4)

Q47.The number of stereoisomers possible for 1, 2 -dimethyl cyclopropane is: (1) Two (2) One (3) Four (4) Three

Q47. Consider the above reaction and identify the Product P : JEE Main 2021 (27 Jul Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)

Q47.Hoffmann bromamide degradation of benzamide gives product A, which upon heating with CHCl3 and NaOH gives product B. The structures of A and B are: JEE Main 2021 (17 Mar Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)

Q47.The diazonium salt of which of the following compounds will form a coloured dye on reaction with β - Naphthol in NaOH? (1) (2) (3) (4)

Q48.Which of the following reaction DOES NOT involve Hoffmann Bromamide degradation ? JEE Main 2021 (16 Mar Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)

Q48.Match List - I with List - II. List - I List - II (Chemical Reaction) (Reagent used) CH3 MgBr /H3O+ a CH3 COOCH2 CH3 →CH3 CH2 OH i (one equivalent) b CH3 COOCH3 →CH3 CHO ii H2 SO4 /H2O c CH3 C ≡N →CH3 CHO iii DIBAL −H/H2O d iv SnCl2, HCl /H2O Choose the most appropriate match. (1) (a) −(ii), (b) −(iii), (c) −(iv), (d) −(i) (2) (a) −(ii), (b) −(iv), (c) −(iii), (d) −(i) (3) (a) −(iii), (b) −(ii), (c) −(i), (d) −(iv) (4) (a) −(iv), (b) −(ii), (c) −(iii), (d) −(i)

Q48.Which of the following is not a correct statement for primary aliphatic amines? JEE Main 2021 (27 Aug Shift 1) JEE Main Previous Year Paper (1) Primary amines can be prepared by the Gabriel (2) Primary amines are less basic than the secondary phthalimide synthesis. amines. (3) The intermolecular association in primary amines (4) Primary amines on treating with nitrous acid is less than the intermolecular association in solution form corresponding alcohols except secondary amines. methyl amine.

Q48.The major product formed in the following reaction is: (1) (2) (3) (4)

Q48.The major products A and B formed in the following reaction sequence are : (1) (2) (3) (4)

Q48.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) CH3 CH2 NH2 (2) CH3 CH2 CH2 NHCH3 (3) (4)

Q48.An organic compound A on treatment with benzene sulfonyl chloride gives compound B. B is soluble in dil. NaOH solution. Compound A is : JEE Main 2021 (18 Mar Shift 2) JEE Main Previous Year Paper (1) C6H5 −N(CH3)2 (2) C6H5 −NHCH2 CH3 (3) C6H5 −CH2 NHCH3 (4)

Q48. Consider the above reaction, compound B is: (1) (2) (3) (4)

Q48.Match List - I with List - II. List-I (Salt) List-II (Flame colour wavelength) (a) (i) Br2 / NaOH (b) (ii) H2/Pd −BaSO4 (c) (iii) Zn(Hg)/ Conc. HCl (d) (iv) Cl2 / Red P, H2O Choose the correct answer from the options given below: (1) (a)-(ii), (b)-(iv), (c)-(i), (d)-(iii) (2) (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii) (3) (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii) (4) (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)

Q48.What is ′X′ in the given reaction? (1) (2) (3) (4)

Q48.A. Phenyl methanamine B. N, N -Dimethylaniline C. N-Methyl aniline D. Benzenamine Choose the correct order of basic nature of the above amines. (1) A > B > C > D (2) A > C > B > D (3) D > B > C > A (4) D > C > B > A