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1(current)

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.

Subtopic: Aromatic Hydrocarbons - Reactions & Mechanism |

91%

Level 1: 80%+

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Hints

Assertion (A):	Nitration of benzene with nitric acid requires the use of concentrated sulphuric acid.
Reason (R):	The mixture of concentrated sulphuric acid and concentrated nitric acid produces the electrophile, NO₂⁺ .

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

Subtopic: Aromatic Hydrocarbons - Reactions & Mechanism |

88%

Level 1: 80%+

1

2

3

4

Hints

1(current)