Question

(copper cannot displace zinc from its salt solution.
(d) Sodium and potassium are stored in kerosene​

Answer 1

Answer:

Sodium and Potassium are highly reactive metals and react vigorously with the oxygen, carbon dioxide and moisture present in the air such that it may even cause a fire. To prevent this explosive reaction, Sodium is kept immersed in kerosene because Sodium doesn't react with kerosene.