Question

Assertion (A): A sample of solid sodium carbonate decahydrate $({\mathrm{Na}}_2{\mathrm{CO}}_3.10H_{2}O)$ would lose mass if exposed to air.

Reason (R): Washing soda gets converted to anhydrous sodium carbonate due to the property of efflorescence.

• A. Both (A) and (R) are true, and (R) is correct explanation of (A).
• B. (A) is true but (R) is false.
• C. (R) is true but (A) is false.
• D. Both (A) and (R) are true, and (R) is not correct explanation of (A).

Answer 1

The correct option is A Both (A) and (R) are true, and (R) is correct explanation of (A).