Ncert Exercises & Solutions

Assertion (A):	Toluene, on undergoing Friedel–Crafts methylation, yields a mixture of ortho- and para-xylene.
Reason (R):	$The –CH₃ group already present on the benzene ring in toluene increases electron density at the ortho and para positions, directing electrophilic substitution to these sites.$

1.	Both (A) and (R) are true, and (R) is the correct explanation of (A).
2.	Both (A) and (R) are true, and (R) is not the correct explanation of (A).
3.	(A) is True, but (R) is False.
4.	(A) is False, but (R) is True.