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NCERT-COMBUSTIONS AND FLAME-EXERCISE
- List conditions under which combustion can take place.
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- Burning of wood and coal causes of air.
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- A liquid fuel used in homes is .
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- Fuel must be heated to its before it starts burning
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- Fire produced by oil cannot be controlled by .
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- Explain how the use of CNG in automobiles has reduced pollution in our...
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- Compare LPG and wood as fuels.
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- Give reasons. Water is not used to control fires involving electrica...
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- Give reasons. LPG is a better domestic fuel than wood
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- Give reasons. Paper by itself catches fire easily whereas a piece of...
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- Make a labelled diagram of a candle flame.
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- Name the unit in which the calorific value of a fuel is expressed.
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- It is difficult to burn a heap of green leaves but dry leaves catch fi...
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- Which zone of a flame does a goldsmith use for melting gold and silver...
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- In an experiment 4.5 kg of a fuel was completely burnt. The heat produ...
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- Can the process of rusting be called combustion? Discuss.
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- Abida and Ramesh were doing an experiment in which water was to be hea...
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