Practice Questions

Q55.The major product of the following reaction is: (1) (2) (3) (4) JEE Main 2018 (15 Apr) JEE Main Previous Year Paper

Q55.Phenol reacts with methyl chloroformate in the presence of NaOH to form product A. A reacts with Br2 to form product B. A and B are respectively (1) (2) (3) (4)

Q56.The reagent(s) required for the following conversion are: (1) (i) NaBH4 (ii) Raney Ni /H2 (iii) H3O+ (2) (i) LiAlH4 (ii) H3O+ (3) (i) B2H6 (ii)DIBAL −H (iii)H3O+ (4) (i) B2H6 (ii) SnCl2 / HCl (iii) H3O+

Q56.The major product formed in the following reaction is: JEE Main 2018 (15 Apr Shift 2 Online) JEE Main Previous Year Paper (1) (2) (3) (4)

Q56.Which of the following compounds will most readily be dehydrated to give alkene under acidic condition? (1) 4 - Hydroxypentan - 2-one (2) 3- Hydroxypentan-2-one (3) 1-Pentanol (4) 2-Hydroxycyclopentanone

Q56.The main reduction product of the following compound with NaBH4 in methanol is : (1) (2) (3) (4) JEE Main 2018 (15 Apr Shift 1 Online) JEE Main Previous Year Paper

Q56.The major product formed in the following reaction is: (1) (2) (3) (4)

Q57.Phenol on treatment with CO2 in the presence of NaOH followed by acidification produces compound X as the major product. X on treatment with (CH3CO)2 O in the presence of catalytic amount of H2SO4 produces: JEE Main 2018 (08 Apr) JEE Main Previous Year Paper (1) (2) (3) (4)

Q57.The increasing order of the acidity of the following carboxylic acids is: (1) III < II < IV < I (2) I < III < II < IV (3) IV < II < III < I (4) II < IV < III < I

Q57.The major product B formed in the following reaction sequence is: JEE Main 2018 (16 Apr Online) JEE Main Previous Year Paper (1) (2) (3) (4)

Q58. The increasing order of diazotisation of the following compounds is: (a) (b) JEE Main 2018 (15 Apr Shift 2 Online) JEE Main Previous Year Paper (c) (d) (1) (D) < (C) < (B) < (A) (2) (A) < (D) < (B) < (C) (3) (A) < (B) < (C) < (D) (4) (A) < (D) < (C) < (B)

Q58.Products A and B formed in the following reactions are respectively: JEE Main 2018 (16 Apr Online) JEE Main Previous Year Paper (1) (2) (3) (4)

Q58.The increasing order of basicity of the following compounds is : (1) (iv) < (ii) < (i) <(iii) (2) (i) < (ii) < (iii) < (iv) (3) (ii) < (i) < (iii) < (iv) (4) (ii) < (i) < (iv) < (iii)

Q59.The correct match between items of List-I and List-II is: List –I List - II (A) Phenelzine (P) Pyrimidine (B) Chloroxylenol (Q) Furan (C) Uracil (R) Hydrazine (D) Ranitidine (S) Phenol (1) (A) −(S), (B) −(R), (C) −(Q), (D) −(P) (2) (A) −(R), (B) −(S), (C) −(P), (D) −(Q) (3) (A) −(R), (B) −(S), (C) −(Q), (D) −(P) (4) (A) −(S), (B) −(R), (C) −(P), (D) −(Q)

Q59.Which of the following will not exist in zwitter ionic form at pH = 7 ? (1) (2) (3) (4)

Q59.Which of the following statements is not true? (1) Chain growth polymerisation involves (2) Chain growth polymerisation includes both homopoly-merisation only homo-polymerisation and copolymerisation (3) Nylon 6 is an example of step-growth (4) Step growth polymerisation requires a polymerisation bifunctional monomer

Q59.Which of the following will not exist in Zwitterionic form at pH = 7 ? (1) (2) (3) (4)

Q60.The predominant form of histamine present in human blood is (pKa, Histidine = 60) JEE Main 2018 (08 Apr) JEE Main Previous Year Paper (1) (2) (3) (4)

Q60.Among the following, the incorrect statement is JEE Main 2018 (16 Apr Online) JEE Main Previous Year Paper (1) cellulose and amylose has 1, 4−glycosidic linkage. (2) lactose contains β −D−galactose and β −D−glucose. (3) maltose and lactose has 1, 4−glycosidic linkage. (4) sucrose and amylose has 1, 2−glycosidic linkage.

Q60.The dipeptide, Gln-Gly, on treatment with CH3COCl followed by aqueous work up gives. (1) (2) (3) (4)

Q61.If λ ∈R is such that the sum of the cubes of the roots of the equation, x2 + (2 −λ)x + (10 −λ) = 0 is minimum, then the magnitude of the difference of the roots of this equation is (1) 20 (2) 2√5 (3) 2√7 (4) 4√2 z ∈C satisfying |z| = 1

Q61.Let p, q and r be real numbers (p ≠q, r ≠0), such that the roots of the equation x+p1 + x+q1 = 1r are equal in magnitude but opposite in sign, then the sum of squares of these roots is equal to (1) p2 + q2 (2) p2+q2 2 (3) 2(p2 + q2) (4) p2 + q2 + r2

Q61.If |z −3 + 2i| ≤4 then the difference between the greatest value and the least value of |z| is (1) √13 (2) 2√13 (3) 8 (4) 4 + √13

Q61.If λ ∈R is such that the sum of the cubes of the roots of the equation x2 + (2 −λ)x + (10 −λ) = 0 is minimum, then the magnitude of the difference of the roots of this equation is : (1) 4√2 (2) 20 (3) 2√5 (4) 2√7

Q61.Let S = {x ∈R : x ≥0 & 2 √x −3 + √x (√x −6) + 6 = 0} . Then S : (1) Contains exactly four elements (2) Is an empty set (3) Contains exactly one element (4) Contains exactly two elements