State what happens when:
$(a)$ Chlorine gas is passed through dry slaked lime.
Also write the chemical equation in each case.

Write balanced chemical equations for the following:
$(i)$ Bleaching powder is kept open in air.
$(ii)$ Blue crystals of copper sulphate are heated.
$(iii)$ Chlorine gas is passed through dry slaked lime.

Identify the correct representation of the reaction occurring during the chlor-alkali process.

$(i)$ Name the products formed when sodium hydrogen carbonate is heated.
$(ii)$ Write the chemical equation for the reaction involved in the above.

Which substance is added to the soil to neutralize acidic soil?

What is the color of copper carbonate salt?