Question

An important step in the manufacture of pulp in paper industry from woody tissues of plants is

• A. Preparation of pure cellulose by removing lignin.
• B. Treatment of wood with chemicals for breakdown of cellulose.
• C. Removal of oil by suitable chemicals.
• D. Removal of water from wood by prolonged heating at ${50}^{o}C$.

Answer 1

The correct option is A Preparation of pure cellulose by removing lignin.

Lignin is present in the wood pulp and it is the main source of colour in pulp due to the presence of chromophores naturally present in the wood. So while preparing papers from pulp we collect pure cellulose and remove the lignin so that we can get a white paper.

So the correct answer is A.