JEE Advanced 2017 · Paper 1 · Chemistry Q18

ChemistrySingle correct+3 / -1Question 36 of 54

Passage

Answer Q.34, Q.35 and Q.36 by appropriately matching the information given in the three columns of the following table.

Columns 1, 2 and 3 contain starting materials, reaction conditions, and type of reactions, respectively.

The only CORRECT combination in which the reaction proceeds through radical mechanism is

(III) (ii) (P)

(IV) (i) (Q)

(II) (iii) (R)

(I) (ii) (R)

Answer and worked solution

Official answer: D

Toluene (I) with $\ce{Br2}/h\nu$ (ii) undergoes free-radical side-chain substitution (R), giving benzyl bromide by a radical chain mechanism.

(D)

JEE Advanced 2017 · Paper 1, Chemistry question 18