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

Tin reacts with concentrated HNO_(3) and gives:

Tin reacts with concentrated HNO_(3) and gives:

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

Dehydration of alcohol to form an alkene is always carried out with concentrated H_(2)SO_(4) and not with concentrated HCl or HNO_(3) . Explain.

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

When oxalic acid is heated with concentrated H_(2) SO_(4) it produces

When oxalic acid is heated with concentrated H_(2) SO_(4) it produces

Formic acid (HCOOH) on heating with concentrated H_(2)SO_(4) gives