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.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

Q47. The structure of X is: JEE Main 2021 (16 Mar 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. R −CN (i) DIBAL−H ⟶R −Y Consider the above reaction and identify "Y" (ii)H2O (1) −CH2 NH2 (2) −CONH2 (3) − CHO (4) −COOH

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)

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. List −I List −II (Drug) (Class of Drug) (a) Furacin (i) Antibiotic (b) Arsphenamine (ii) Tranquilizers (c) Dimetone (iii) Antiseptic (d) Valium (iv) Synthetic antihistamines Choose the most appropriate match : (1) (a) −(i), (b) −(iii), (c) −(iv), (d) −(ii) (2) (a) −(iii), (b) −(iv), (c) −(ii), (d) −(i) (3) (a) −(ii), (b) −(i), (c) −(iii), (d) −(iv) (4) (a) −(iii), (b) −(i), (c) −(iv), (d) −(ii)

Q48.Orlon fibres are made up of: (1) Polyacrylonitrile (2) Polyesters (3) Polyamide (4) Cellulose

Q48.Which of the following polymer is used in the manufacture of wood laminates ? (1) cis-poly isoprene (2) Melamine formaldehyde resin (3) Urea formaldehyde resin (4) Phenol and formaldehyde resin

Q48.Which one of the following reactions does not occur ? (1) (2) (3) (4) JEE Main 2021 (22 Jul Shift 1) JEE Main Previous Year Paper

Q48.A reaction of benzonitrile with one equivalent CH3 MgBr followed by hydrolysis produces a yellow liquid "P". The compound "P" will give positive ________ (1) Iodoform test (2) Schiff's test (3) Ninhydrin's test (4) Tollen's test

Q48. Consider the above chemical reaction and identify product A (1) (2) (3) (4) JEE Main 2021 (18 Mar Shift 1) JEE Main Previous Year Paper

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

Q48.Which one of the following gives the most stable Diazonium salt ? JEE Main 2021 (01 Sep Shift 2) JEE Main Previous Year Paper (1) (2) (3) (4)

Q48.Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Aluminium is extracted from bauxite by the electrolysis of molten mixture of Al2 O3 with cryolite. Reason (R) : The oxidation state of Al in cryolite is +3. In the light of the above statements, choose the most appropriate answer from the options given below : (1) Both (A) and (R) are correct and (R) is the (2) (A) is true but (R) is false. correct explanation of (A). (3) Both (A) and (R) are correct but (R) is not the (4) (A) is false but (R) is true. correct explanation of (A).

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

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

Q48.Match List I with List II. List I (Monomer Unit) List II (Polymer) (a) Caprolactum (i) Natural rubber (b) 2 - Chloro-1, 3 - butadiene (ii) Buna-N (c) Isoprene (iii) Nylon 6 (d) Acrylonitrile (iv) Neoprene Choose the correct answer from the options given below: (1) a →iii, b →iv, c →i, d →ii (2) a →i, b →ii, c →iii, d →iv (3) a →ii, b →i, c →iv, d →iii (4) a →iv, b →iii, c →ii, d →i JEE Main 2021 (24 Feb Shift 1) JEE Main Previous Year Paper

Q48.The major product formed in the following reaction 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.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.Given below are two statements : Statement I : Penicillin is a bacteriostatic type antibiotic. Statement II : The general structure of Penicillin is: Choose the correct option : (1) Both statement I and statement II are false (2) Statement I is incorrect but statement II is true (3) Both statement I and statement II are true (4) Statement I is correct but statement II is false