question_answer2) 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_____.View Answer play_arrow
question_answer5) 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 aluminum pipe does not.View Answer play_arrow
question_answer13) 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?View Answer play_arrow
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