1.

Assertion : Benzene forms benzene sulphonic acid with fuming H_2SO_4 at high temperature . Reason : The attacking species is SO_3

Answer»

If both ASSERTION and reason are TRUE and the reason is the correct explanation of the assertion
If both assertion and reason are true butreason is not the correct explanation of the assertion
if assertion is true but reason is false
If assertion and reason both are false

SOLUTION :With furning `H_2SO_4` or oleum (conc. `H_2SO_4 +SO_3`) at HIGH temperature benzene forms m-benzene disulphonic acid


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