Question

Burning of dry leaves takes less time as compared to burning of green leaves. Which of the following are the reasons behind this?

• A. Green leaves have lower ignition temperature
• B. Green leaves have higher ignition temperature
• C. Water quantity in green leaves is lesser than dry leaves
• D. Water quantity in green leaves is higher than dry leaves

Answer 1

Answer: (B), (D)

The correct options are
B Green leaves have higher ignition temperature
D Water quantity in green leaves is higher than dry leaves

$\bullet$ Green leaves contains a lot of moisture content and has very high ignition temperature. As water is a natural fire extinguisher, it does not allow green leaves to catch fire easily.
$\bullet$ Whereas, dry leaves contain less or no moisture. Hence, they have low ignition temperature. Thus, dry leaves catch fire easily as compared to green leaves.