Question

What would happen if sodium and potassium are kept in open air? [3 MARKS]

Answer 1

Reason : 1.5 Marks each

Both sodium and potassium are highly reactive metals. They react violently (may catch fire) with oxygen and moisture present in air even at the room temperature. A lot of heat is evolved when such reaction occurs and as such the metal is lost because it makes oxides. Hence, these extremely reactive metals are not kept in open but are kept immersed in the kerosene to keep them from reacting .