Name the products formed when a candle burns in oxygen.

Give a reason for the following :

Like oxygen, nitrous oxide (N₂O) also supports combustion. A glowing splint introduced into a jar of N₂O, is rekindled.

Give a chemical test to distinguish oxygen from N₂O

Name a non-metallic oxide which is a reducing agent.

Name (formula not acceptable) the gas produced in the following reaction: Burning of sulphur.