Medium
Give the characteristic tests for the following gases:
$(a)$ $O_2$
$(b)$ $H_2$
$(a)$ $O_2$
$(b)$ $H_2$
(N/A) The evolution of oxygen $(O_2)$ gas during a reaction can be confirmed by bringing a burning candle near the mouth of the test tube containing the reaction mixture. The intensity of the flame increases because oxygen supports combustion.
$(b)$ Hydrogen $(H_2)$ gas burns with a 'pop' sound when a burning candle or matchstick is brought near it.
$(b)$ Hydrogen $(H_2)$ gas burns with a 'pop' sound when a burning candle or matchstick is brought near it.
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