Write down the balanced equation for the reaction when:
Carbon dioxide is passed through a concentrated aqueous solution of sodium chloride saturated with ammonia.

Give reasons of the following:
Magnesium oxide is used for the lining of steel making furnace.

Give reasons of the following:
Why is sodium chloride added during electrolysis of fused anhydrous magnesium chloride?

Give reasons of the following:
Hydrogen peroxide is a better oxidising agent than water.