When concentracted nitric acid is heated, it decomposes to give

An acid obtained when concentrated nitric acid is heated with sulphur is _______ [sulphurous acid/sulphuric acid/nitrous acid]

Concentrated nitric acid reacts with iodine to give:

When propionic acid is heated with ammonia give

Orthoboric acid when heated to red hot gives :

Orthoboric acid when heated to red hot gives :

What happen when boran is strongly heated with Concentrated nitric acid. Give balanced Chemical reaction.