brass gets discoloured in air because of the presence of which gas in air?
Brass is an alloy of copper and zinc.
Due to the presence of copper, It reacts with the H2S gas and get discoloured.
Arrange the gases present in the air in the increasing order of their boiling points
Which gas gets liquified first when the air gets compressed?
Identify the gas(es) which is released when coal is burnt in the presence of air.