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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 |
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Answer» B. they contain a lot of water. 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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