Question

Which of the following is also known as the white liquor?

(a) Sodium hydroxide and Sodium hydride

(b) Sodium sulphite and Sodium sulphate

(c) Sodium sulphate and Sodium hydroxide

(d) Sodium hydride only

I had been asked this question in class test.

This intriguing question originated from Chemical Pulping & Semichemical Pulp in chapter Paper and Paper Based Packaging Materials of Food Packaging Technology

Answer 1

Correct option is (a) Sodium hydroxide and Sodium hydride

For explanation: A solution of sodium hydroxide and sodium hydride is also known as the white liquor. It is widely used in the chemical pulping industry for cooking the wood chips, hence, also called cooking liquor.