Assertion: Oxidation of 1-nitronaphthalene gives o-nitrophthalic acid whereas 1-aminonaphthalene on oxidation gives phthalic acid. Reason: An amino group attached to the benzene ring makes it resistant to oxidation whereas nitro group makes the benzene ring susceptible to oxidation.

Question

Assertion: Oxidation of 1-nitronaphthalene gives o-nitrophthalic acid whereas 1-aminonaphthalene on oxidation gives phthalic acid. Reason: An amino group attached to the benzene ring makes it resistant to oxidation whereas nitro group makes the benzene ring susceptible to oxidation. (A) If both assertion and reason are true and reason is the correct explanation of assertion (B) If both assertion and reason are true but reason is not the correct explanation of assertion (C) If assertion is true but reason is false (D) If both assertion and reason are false

Tardigrade Admin · Accepted Answer

An amino group increases the electron density in the benzene ring to which it is attached thereby making it susceptible to oxidation while a nitro group decreases the electron density in the benzene ring to which it is attached thereby making it resistant to oxidation. Instead, the other benzene ring gets oxidised giving o-nitrophthalic acid as shown below :

Q. Assertion : Oxidation of 1-nitronaphthalene gives o-nitrophthalic acid whereas 1-aminonaphthalene on oxidation gives phthalic acid. Reason : An amino group attached to the benzene ring makes it resistant to oxidation whereas nitro group makes the benzene ring susceptible to oxidation.

If both assertion and reason are true and reason is the correct explanation of assertion

If both assertion and reason are true but reason is not the correct explanation of assertion

If assertion is true but reason is false

If both assertion and reason are false

Q. Assertion : Oxidation of 1-nitronaphthalene gives o-nitrophthalic acid whereas 1-aminonaphthalene on oxidation gives phthalic acid.
Reason : An amino group attached to the benzene ring makes it resistant to oxidation whereas nitro group makes the benzene ring susceptible to oxidation.