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Phenol on being heated with concentrated...

Phenol on being heated with concentrated `H_(2)SO_(4)` and then with concentrated `HNO_(3)` gives

A

`o-` and `p-` nitrophenol

B

`m-` nitrophenol

C

picric acid

D

`o-` nitrophenol

Text Solution

Verified by Experts

The correct Answer is:
C
The sulphonic acid group is oftern readily replaced by a nitro-group. This offers a means of preparing nitro derivatives of compounds that are easily oxidaized by nitric acid, since the sulponic acid derivatives are not easily oxidized. For example, picric acid from phenol. ltbRgt
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Knowledge Check

  • Tin reacts with concentrated HNO_(3) and gives:

    A
    stannic nitrate
    B
    stannous nitrate
    C
    metastannic acid
    D
    none of these

  • Chlorobenzene when heated with a mixture of concentrated H_(2)SO_(4) and concentrated HNO_(3) yeilds_________ as a major product.

    A
    B
    C
    D

  • Ethanol is heated with concentrated H_(2)SO_(4) . The product formed is

    A
    `CH_(3)=underset(O)underset(||)(C)-O-C_(2)H_(5)`
    B
    `C_(2)H_(6)`
    C
    `C_(2)H_(4)`
    D
    `C_(2)H_(2)`

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