Fill in the blanks.(a) Burning of wood and coal causes ............. of air.(b) A liquid fuel, used in homes is.............. .(c) Fuel must be heated to its ................. ............ before it starts burning.(d) Fire produced by oil cannot be controlled by................
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.
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?
