Question

Assertion and Reason
21) (A) Baking soda creates acidity in the stomach.
(R) Baking soda is alkaline.
22) (A) Sodium metal is stored under kerosene.
(R) Metallic sodium melts when exposed to air.​

Answer 1

baking soda is alkaline .

and sodium metal cannot be stored in air because it reacts with the oxygen of the air which is a exothermic reaction and results in the huge amount of heat.