Multiple choice

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

  1. removal of water from the wood by prolonged heating at approximately 50oC.

  2. treatment of wood with chemical that breaks down cellulose.

  3. removal of oils present in the wood by treatment with suitable chemicals.

  4. preparation of pure cellulose by removing lignin.
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D Correct answer
Explanation

 An important step in the manufacture of pulp for paper industry from the woody tissues of plants is the preparation of pure cellulose by removing lignin.

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