Chemistry NCERT Exemplar Solutions Class 12th Chapter Eleven

Kindly consider the following figure

Kindly go through the solution

This is a assertion and reason answer type question as classified in NCERT Exemplar

(iv) Assertion is a wrong statement but reason is correct. 

Explanation:  Phenol on treatment with dil. HNO₃ form o-nitrophenol and p-nitrophenol.

This is a assertion and reason answer type question as classified in NCERT Exemplar

(ii) Assertion and reason both are wrong statements.

Explanation: Correct assertion: Phenol on treatment with bromine water can form 2,4,6- tribromophenol

Correct reason: In water, phenol gives phenoxide ions which activate the ring towards electrophilic substitution reaction.

This is a assertion and reason answer type question as classified in NCERT Exemplar

(iii) Assertion is a correct statement but reason is wrong.

Explanation:  Phenoxide ion is stabilized by resonance which is not possible in alkoxide ion.

This is a assertion and reason answer type question as classified in NCERT Exemplar

(v) Both assertion and reason are correct statements but reason is not correct explanation  of assertion.

Explanation:  Due to intramolecular hydrogen bonding o-Nitrophenol does not form hydrogen bond with  water

This is a assertion and reason answer type question as classified in NCERT Exemplar

(iv) Assertion is a wrong statement but reason is correct.  

Explanation:  Bromination of phenol cannot be carried out in presence of Lewis acid.

This is a assertion and reason answer type question as classified in NCERT Exemplar

(ii) Assertion and reason both are wrong statements.

Explanation: Correct assertion: Boiling points of alcohol  are higher than that of ethers of comparable molecular mass.

Correct reason: Alcohols can form intermolecular hydrogen bonding while ethers cannot.