How will you obtain?

(a) Magnesium oxide from magnesium.

(b) Silver chloride from silver nitrate.

(c) Nitrogen dioxide from lead nitrate.

(d) Zinc chloride from zinc.

(e) Ammonia from nitrogen.

Also give balanced equations for the reactions.

What do you observe when iron nail is kept in copper sulphate solution for sometime?

What do you observe when Blue litmus paper is dipped in dilute hydrochloric acid?

What do you observe when Lead nitrate is heated?