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

Correct Answer: B. they contain a lot of water.

Explanation: The green leaves contain a lot of water. This water does not allow the green leaves to get heated to their ignition temperature and makes burning of green leaves difficult. 

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Updated on: 10-Oct-2022

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