Question

Assertion (A) : washing soda is sodium carbonate hexahydrate. Reason (R) : chlorine is used for making bleaching powder. 
(a) If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
(b) If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
(c) If Assertion is true but Reason is false.
(d) If Assertion is false and Reason are true.​

Answer 1

Answer:

Explanation:

Option D

Answer 2

a) both Assertion and Reason are true and Reason is the correct explanation of Assertion.

Washing Soda is sodium carbonate containing 10 molecules of water of crystallization. So, we can say that washing soda is sodium carbonate decahydrate (Na2CO3. 10H2O). The sodium carbonate which does not contain any water of crystallization is called anhydrous sodium carbonate or soda ash (Na2CO3).

Sodium carbonate is called washing soda because of salt of carbonic acid, a chemical that produces a wide range of salts collectively known as carbonates. The sodium carbonate softens water helping other cleaning ingredients lift soil the fabrics and suspend the soil in the wash water.