The formation of 2-butene from 2-butanol in the presence of conc. `H_(2)SO_(4)` is in accordance with-

Conc. H_(2)SO_(4) is not

Nitration of phenol in the presence of conc. H_2 SO_4 forms

Describe the mechanism for the formation of diethyl ether from ethanol in the presence of concentrated H_(2)SO_(4)

Decomposition of oxalic acid in the presence of conc. H_(2)SO_(4) gives

The formation of m-dinitrobenzene by heating nitrobenzene with conc H_(2)SO_(4) is a/an .