A mixture of benzene & fuming `H_2SO_4` is heated at `200-250^@C`.

Oleum or fuming H_(2)SO_(4) is

A mixture of NaCl, MnO_(2) and cocn. H_(2)SO_(4) is heated .

If aniline is treated with conc. H_(2)SO_(4) and heated at 200^(@)C the product is

If aniline is treated with conc. H_(2)SO_(4) and heated at 200^(@)C the product is

When a mixture of ethyl alcohol and conc. H_2SO_4 are heated at 413 K gives diethyl ether . This reaction is

The pH of a mixture of 100 ml 1M H_2SO_4 and 200 ml 1 N NaOH at 25^@C is

The pH of a mixture of 100 ml 1M H_2SO_4 and 200 ml 1 N NaOH at 25^@C is

Nitrobenzene can be prepared from benzene by using a mixture of conc. HNO_3 and H_2SO_4 . In the mixture, HNO_3 acts as a/an