Give an example of a metal which
(i) is a liquid at room temperature.
(ii) is kept immersed in kerosene for storing.
(iii) is both malleable and ductile.
(iv) is the best conductor of heat.

Explanation

(i) Mercury (Hg) is liquid at room temperature :
(ii) Sodium (Na) is kept immersed in kerosene for storing.
(iii) Aluminium (Al) is malleable and ductile
(iv) Silver (Ag) is the best conductor of heat.