Sodium is tarnished in air. Why?

Sodium is an………

Sodium catches fire in water. Why?

Aqueous solution of sodium carbonate is alkaline. Why?

What happens when (i) Sodium metal is dropped in water (ii) Sodium metal is heated in a free supply of air? Iii) Sodium peroxide dissolves in water?

What happens when (ii) Sodium metal is heated in a free supply of air?

Sodium and potassium are stored in kerosene. Why?

Potassium super oxide is preferred to sodium peroxide to purify air. Why?

Sodium is stored in __________.

Nitrous oxide supports combustion more vigorously than air. Why?

Although aluminium is above hydrogen in the electrochemical series, it is stable in air and water Why?