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Burning of wood and coal causes of air...

Burning of wood and coal causes _______ of air.

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Spontaneous pollution
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S CHAND IIT JEE FOUNDATION-COMBUSTION AND FLAME -Self Assessment Sheet-17(Fill in the blanks)
  1. A fuel must be heated to its before it starts burning.

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  2. The most common supporter of combustion around us is .

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  3. Burning of wood and coal causes of air.

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  4. An important liquid fuel, used in homes is .

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  5. The rise in temperature of the environment of the earth is called .

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  6. What type of combustion is represented by: burning of white phosphor...

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  7. What type of combustion is represented by : burning of LPG in a gas ...

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  8. What type of combustion is represented by : ignition of a cracker ?

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  9. Make a labelled diagram of a candle flame.

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  10. List conditions under which combustion can take place.

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  11. Define ignition temperature.

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  12. What are the main constituents of biogas and kitchen gas (LPG)?

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  13. What is LPG? Mention its main component. Why is a smelling agent added...

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  14. "The calorific value of LPG is 55000 kj/kg". What does it mean ?

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  15. Which of the following fuels has the lowest calorific value ? Diesel...

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  16. Which of the following fuels has the highest calorific value? Wood,...

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  17. Explain why, fire caused by electricity should not be extinguished by ...

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  18. How is the fire produced by burning oil (or petrol) extinguished?

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  19. A durm full of kerosene catches fire. What is the simplest way to put ...

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  20. Why is kerosene used in stoves and not petrol?

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