Iron reacts with blue vitriol to give green vitriol and reddish-brown metal. Green vitriol and the respective metal is:

(a) Ferrous sulphate, Copper

(b) Copper sulphate, Silver

(c) Ferrous sulphate, Silver

(d) Copper sulphate, Copper

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.