Practice Questions

Q57.A compound of molecular formula C8H8O2 reacts with acetophenone to form a single cross-aldol product in the presence of base. The same compound on reaction with concentrated NaOH forms benzyl alcohol as one of the products. The structure of the compound is: (1) (2) (3) (4)

Q57.The major product expected from the following reaction is: (1) (2) (3) (4)

Q57.The correct sequence of reagents for the following conversion will be JEE Main 2017 (02 Apr) JEE Main Previous Year Paper (1) CH3MgBr, H+ / CH3OH, AgNH32 +OH- (2) CH3MgBr, AgNH32 +OH- , H+ / CH3OH (3) AgNH32 +OH-, CH3MgBr, H+ / CH3OH (4) AgNH32 +OH-, H+ / CH3OH, CH3MgBr

Q58.A mixture containing the following four compounds is extracted with 1 M HCl. The compound that goes to aqueous layer is: (1) IV (2) II (3) I (4) III

Q58.The major product obtained in the following reaction is (1) (2) (3) (4)

Q58.Among the following compounds, the increasing order of their basic strength is: (1) (II) < (I) < (III) < (IV) (2) (II) < (I) < (IV) < (III) (3) (I) < (II) < (IV) < (III) (4) (I) < (II) < (III) < (IV)

Q59.The formation of which of the following polymers involves hydrolysis reaction? (1) Bakelite (2) Nylon- 6,6 (3) Terylene (4) Nylon-6

Q59.The reason for "drug induced poisoning" is: (1) binding irreversibly to the active site of the (2) binding at the allosteric sites of the enzyme. enzyme. (3) binding reversibly at the active site of the (4) brining conformational change in the binding site enzyme. of enzyme. JEE Main 2017 (08 Apr Online) JEE Main Previous Year Paper

Q59.Which of the following is a biodegradable polymer? JEE Main 2017 (09 Apr Online) JEE Main Previous Year Paper (1) (2) (3) (4)

Q60.The incorrect statement among the following is (1) α −D−glucose and β −D− glucose are (2) the penta acetate of glucose does not react with enantiomers. hydroxyl amine. (3) α −D−glucose and β −D−glucose are anomers.(4) cellulose is a straight chain polysaccharide made up of only β −D−glucose units.

Q60.Which of the following compounds will behave as reducing sugar in an aqueous KOH solution? (1) (2) (3) (4)

Q60.Among the following, the essential amino acid is: (1) Valine (2) Alanine (3) Serine (4) Aspartic acid

Q61.If, for a positive integer 𝑛, the quadratic equation, 𝑥𝑥+ 1 + 𝑥+ 1𝑥+ 2 + . .. + 𝑥+ 𝑛-¯ 1𝑥+ 𝑛= 10𝑛 has two consecutive integral solutions, then 𝑛 is equal to: (1) 12 (2) 9 (3) 10 (4) 11 JEE Main 2017 (02 Apr) JEE Main Previous Year Paper

Q61.The sum of all the real values of x Satisfying the equation 2(x−1)(x2+5x−50) = 1 is: (1) 16 (2) −5 (3) −4 (4) 14

Q61.Let p(x) be a quadratic polynomial such that p(0) = 1. If p(x) leaves remainder 4 when divided by x −1 and it leaves remainder 6 when divided by x + 1 then: (1) p(−2) = 19 (2) p(2) = 19 (3) p(−2) = 11 (4) p(2) = 11

Q62.Let 𝜔 be a complex number such that 2𝜔+ 1 = 𝑧 where 𝑧= √-3 . If 1 1 1 1 -𝜔2 - 1 𝜔2 = 3𝑘, 1 𝜔2 𝜔7 Then 𝑘 can be equal to: (1) – 𝑧 (2) 1 𝑧 (3) -1 (4) 1

Q62.The equation Im( iz−2z−i ) + 1 = 0, z ∈C, z ≠i represents a part of a circle having radius equal to : (1) 1 (2) 2 (3) 3 (4) 1 4 2

Q62.Let z ∈C, the set of complex numbers. Then the equation, 2|z + 3i| −|z −i| = 0 represents: (1) A circle with radius 8 (2) An ellipse with length of minor axis 16 3 9 (3) An ellipse with length of major axis 16 (4) A circle with diameter 10 3 3

Q63.The number of ways in which 5 boys and 3 girls can be seated on a round table if a particular boy B1 and a particular girl G1 never sit adjacent to each other, is: (1) 7! (2) 5 × 6! (3) 6 × 6! (4) 5 × 7!

Q63.A man 𝑋 has 7 friends, 4 of them are ladies and 3 are men. His wife 𝑌 also has 7 friends, 3 of them are ladies and 4 are men. Assume 𝑋 and 𝑌 have no common friends. Then the total number of ways in which 𝑋 and 𝑌 together can throw a party inviting 3 ladies and 3 men, so that 3 friends of each of 𝑋 and 𝑌 are in this party is: (1) 485 (2) 468 (3) 469 (4) 484

Q63.If all the words, with or without meaning, are written using the letters of the word QUEEN and are arranged as in English dictionary, then the position of the word QUEEN is: (1) 47th (2) 45th (3) 46th (4) 44th

Q64.For any three positive real numbers 𝑎, 𝑏 and 𝑐. If 925𝑎2 + 𝑏2 + 25𝑐2 - 3𝑎𝑐= 15𝑏3𝑎+ 𝑐. Then (1) 𝑏, 𝑐 and 𝑎 are in G.P. (2) 𝑏, 𝑐 and 𝑎 are in A.P. (3) 𝑎, 𝑏 and 𝑐 are in A.P. (4) 𝑎, 𝑏 and 𝑐 are in G.P.

Q64.If the arithmetic mean of two numbers a and b, a > b > 0 , is five times their geometric mean, then a+ba−b is equal to: (1) 7√3 (2) 3√2 12 4 (3) √6 (4) 5√6 2 12

Q64. If three positive numbers a , b and c are in A.P. such that abc = 8, then the minimum possible value of b is: (1) 4 23 (2) 2 (3) 4 31 (4) 4

Q65.The value of 21𝐶1-10𝐶1 + 21𝐶2-10𝐶2 + 21𝐶3-10𝐶3 + 21𝐶4-10𝐶4 + … + 21𝐶10-10𝐶10 is (1) 221 - 211 (2) 221 - 210 (3) 220 - 29 (4) 220 - 210