Chemistry NCERT Exemplar Solutions Class 12th Chapter Thirteen

This is a Assertion and Reason Type Questions as classified in NCERT Exemplar

Ans: (c)

In the acryl derivative, the delocalisation of electrons of the nitrogen atom occur over the carbonyl group, this decreases the electron density on the nitrogen atom that it no more perform as nucleophile and don't react with next acylating alkaline molecule. 

Therefore, Assertion statement is correct but reason is incorrect.

This is a Matching Type Questions as classified in NCERT Exemplar

 Ans: (i)- (b), (ii)- (a), (iii)- (d), (iv)- (c)

This is a Matching Type Questions as classified in NCERT Exemplar

Ans: (i)- (d), (ii)- (c), (iii)- (a), (iv)- (b)

This is a Short Type Questions as classified in NCERT Exemplar

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This is a Short Type Questions as classified in NCERT Exemplar

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 This is a Short Type Questions as classified in NCERT Exemplar

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This is a Short Type Questions as classified in NCERT Exemplar

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This is a Short Type Questions as classified in NCERT Exemplar

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This is an example of an electrophilic aromatic substitution reaction. phenol generates phenoxide ion in alkaline medium, which is more electron-rich than phenol and thus more reactive to electrophilic attack. In this reaction, the electrophile is an aryldiazonium cation.

The faster the reaction, the stronger the electrophile.

The cation p-nitrophenyldiazonium is a stronger electrophile than the cation p-toluene diazonium.

As a result, it preferentially couples with phenol.

This is a Short Type Questions as classified in NCERT Exemplar

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This is a Short Type Questions as classified in NCERT Exemplar

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