Which of the following is(are) an endothermic process(es)?
$(i)$ Dilution of sulphuric acid
$(ii)$ Sublimation of dry ice
$(iii)$ Condensation of water vapours
$(iv)$ Evaporation of water

State whether the following statement is true or false:
Calcium oxide is also called lime or quicklime.

State whether the following statement is true or false:
On heating lead nitrate crystals, the emission of brown fumes occurs.

State one industrial application of the reduction process.

What happens when a piece of
$(a)$ zinc metal is added to copper sulphate solution?
$(b)$ aluminium metal is added to dilute hydrochloric acid?
$(c)$ silver metal is added to copper sulphate solution?
Also,write the balanced chemical equation if the reaction occurs.

What type of coating is formed on silver articles when they get corroded?