Question

Lithium can not be stored in kerosene oil because
(a) it is an alkali metal
(b) it reacts with kerosene oil
(c) it floats to the surface of kerosene oil
(d) none of the above is correct

Answer 1

(c) it floats to the surface of kerosene oil

because The density of kerosene is higher than the lithium, if we immerse the lithium in it, it starts to float. So, the jelly like Paraffin wax is used.

Density of kerosene= 0.81g/cm³

Density of Lithium= 0.534g/cm³

You can clearly see that Density of kerosene> Density of Lithium