Cyclopropane react with conc. HBr to give

Aniline reacts with conc. HNO_(3) to give

Neopentyl alcohol reacts with concentrated HBr to give 2-bromo-2-methylbutane. Write the mechanism for the formation of this product.

Benzenaldehyde reacts with conc. NaOH to give :

Carbon reacts with conc. H_(2)SO_(4) to gives

Zinc reacts with dilute H_(2)SO_(4) to give H_(2) . It also reacts with conc. H_(2)SO_(4) to give SO_(2) . How will you account for this difference ?

The reaction of HBr with gives

The reaction of with HBr gives