Question

(b)Sodium metal is stored in kerosene.
(c)Metals are used for making bells.
(d)A greenish deposit forms on the surface of copper vessels.
(e)Copper wires are used for electrical wiring.
(f)Non-metal used in crackers​

Answer 1

(a)Sodium is a very reactive metal.Hence it is kept in kerosene to prevent it from coming in contact with moisture and oxygen

(b)because they produce ringing sound when we strike them

(c)copper vessel undergo oxidation due to humidity

(d)because it is a good conductor of electricity

(e)because it is a poor conductor of electricity and heat