Directive influence in monosubstituted benzene — NEET & JEE Questions

Question 1 · difficulty L1 · recall

An alkyl group such as $-CH_3$ on benzene is generally

• A. ortho/para directing
• B. meta directing
• C. non-directing
• D. always ring deactivating only

Question 2 · difficulty L2 · understanding

The nitro group $-NO_2$ is generally

• A. meta directing and deactivating
• B. ortho/para directing and activating
• C. ortho/para directing and strongly activating
• D. non-directing

Question 3 · difficulty L2 · understanding

The hydroxyl group $-OH$ on benzene is generally

• A. ortho/para directing and activating
• B. meta directing and deactivating
• C. non-directing
• D. always para-only directing

Question 4 · difficulty L2 · understanding

Halogens on benzene are unusual because they are generally

• A. deactivating but ortho/para directing
• B. activating and meta directing
• C. strongly activating and para-only
• D. non-directing

Question 5 · difficulty L3 · application

Nitration of toluene gives mainly substitution at

• A. ortho and para positions
• B. meta position only
• C. ipso position only
• D. all positions equally

Question 6 · difficulty L3 · application

Nitration of nitrobenzene gives predominantly

• A. meta-dinitrobenzene
• B. ortho-dinitrobenzene only
• C. para-dinitrobenzene only
• D. toluene

Question 7 · difficulty L3 · application

Bromination of phenol under controlled conditions is directed mainly to

• A. ortho and para positions
• B. meta position only
• C. no ring position
• D. the side chain only

Question 8 · difficulty L3 · application

Chlorobenzene is less reactive than benzene toward EAS but directs new substitution mainly

• A. ortho/para
• B. meta
• C. randomly
• D. only at the carbon bearing chlorine

Question 9 · difficulty L4 · application

Which substituent is both strongly activating and ortho/para directing?

• A. $-NH_2$
• B. $-NO_2$
• C. $-COOH$
• D. $-CHO$

Question 10 · difficulty L4 · application

Which substituent is most likely to direct nitration predominantly to the meta position?

• A. $-COOH$
• B. $-CH_3$
• C. $-OH$
• D. $-NH_2$