Give an example each
gas in gas

Give an example each gas in liquid

(i) Give an example each (i) gas in liquid, (ii) liquid, (iii) solid in solid, (iv) gas in gas (ii) explain the types of double displacement reactions with examples.

Given an example each of solid in gas and liquid in gas solution

Give one example each of solid in a gas and liquid in gas solution.

Give one example each of (i) change in state (ii) evolution of a gas.