Question

A heap of green leaves is lying in one corner of a park. The green leaves in the heap burn with difficulty because:
A. they contain a tough material called cellulose.
B. they contain a lot of water.
C. they contain a green pigment chlorophyll.
D. they do not get sufficient oxygen for burning

Answer 1

They contain a green pigment chlorophyll.


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Answer 2

B. they contain a lot of water.

Explanation:

Green leaves have a lot of chlorophyll and moisture in them. This moisture does not allow them to catch fire easily when a heap of green leaves are burnt. However, dry leaves have no moisture or water content in them. Therefore, if it were a heap of dry leaves, it would have caught fire easily.

So, Option B is the answer.