It is difficult to burn a heap of green leaves but dry leaves catch fire easily. Explain.
Answer:
Green leaves have a lot of moisture in them. This moisture does not allow them to catch fire easily. However, dry leaves have
no moisture in them. Therefore, they catch fire easily.
Abida and Ramesh were doing an experiment in which water was to be heated in a beaker. Abida kept the beaker near the
wick in the yellow part of the candle flame. Ramesh kept the beaker in the outermost part of the flame. Whose water will get
heated in a shorter time?
Give reasons.
(a) Water is not used to control fires involving electrical equipment.
(b) LPG is a better domestic fuel than wood.
(c) Paper by itself catches fire easily whereas a piece of paper wrapped around an aluminium pipe does not.