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Paper becomes brittle and yellow with age. Why?
1. The acid content in paper causes brittleness to develop
2. In the presence of visible light, photosensitised oxidation occurs
3. The ultra-violet component of sunlight causes photolysis of cellulose by direct cleavage of the cellulose polymer


A) 1 and 2

B) 2 and 3

C) 1 and 3

D) 1, 2 and 3

Correct Answer:
D) 1, 2 and 3


Part of solved Physics questions and answers : >> General Science >> Physics




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