Question

For the following reations major products are:

• A. P , S , U and W
• B. P , S , U and V
• C. Q , R , T amd W
• D. Q , R , T amd V

Answer 1

The correct option is A P , S , U and W

• these are electrophilic substitution reactions of benzene which follow mechanism
• so major product from that which have more stable +ve charge at carbon
• +ve charge is stablised by hyper-conjugation and we know hyperconjugation effect order for $C{H}_3>C{D}_3>C{T}_3$ so electrophile should attaiched at ortho position to as order preference $C{H}_3>C{D}_3>C{T}_3$
• thus correct response of this is P , S , U and W are major products