A group which deactivates the benzene ring towards EAS but which direct the incoming group principally to the ortho and para position is:

- N H_{2}

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- C l

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N O_{2}

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- N H_{2} C O C H_{3}

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Solution

The correct option is B $- C l$
$- N H_{2} a n d - N H_{2} C O C H_{3}$ are activating group and $- N O_{2}$ is deactivating group. -Cl is deactivating group due to its $- I$ effect but it direct electrophile to ortho and para position due to $+ M$ effect.

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Similar questions

Q. A group which deactivates the benzene ring towards electrophilic substitution but which directs the incoming group principally to the o- and p-positions is

Q. A group which deactivates the benzene ring towards electrophilic substitution but directs the reaction at ortho and para position:

Assertion (A): - $N O_{2}$ group is benzene ring deactivating and m - directing group

Reason (R): - $N O_{2}$ group with draws electron density from benzene ring and makes ortho and para positions more electron deficient than meta position

Explain the fact that in aryl alkyl ethers
The alkoxy group activates the benzene ring towards electrophilic substitution.

It directs the incoming substituents to ortho and para positions in benzene ring.

Q. Which of the following benzene ring substituents is deactivating but ortho-para directing?

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A group which deactivates the benzene ring towards EAS but which direct the incoming group principally to the ortho and para position is:

The correct option is B −Cl−NH2and−NH2COCH3 are activating group and −NO2 is deactivating group. -Cl is deactivating group due to its −I effect but it direct electrophile to ortho and para position due to +M effect.

The correct option is B $- C l$
$- N H_{2} a n d - N H_{2} C O C H_{3}$ are activating group and $- N O_{2}$ is deactivating group. -Cl is deactivating group due to its $- I$ effect but it direct electrophile to ortho and para position due to $+ M$ effect.