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There are following zones of a flame :-...

There are following zones of a flame :-

A

Two

B

Three

C

Four

D

No any zone

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The correct Answer is:
B
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PEARSON IIT JEE FOUNDATION-COMBUSTION AND FLAME -CLASSROOM CORNER Very Short Answer Type Questions (Multiple Choice Question)
  1. CNG and LPG are the examples of

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  2. Ignition temperature is

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  3. Combustion is a

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  4. What are the products of combustion of any fuel?

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  5. There are following zones of a flame :-

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  6. Burning of wood and coal causes of air.

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  7. A liquid fuel used in homes is

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  8. A fuel must be heated to its before it starts burning.

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  9. Fire produced by oil cannot be controlled by .

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  10. Which of the following is fuel for our body?

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  11. The temperature at which a substance catches fire is called its temp...

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  12. A combustible substance is usually made of , which are compounds of ca...

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  13. is a chemical process in which a substance reacts with oxygen to give ...

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  14. When a substance burns in sufficient supply of air, it produces a blue...

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  15. During incomplete combustion, the formed from leftover carbon particl...

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  16. The soda and acid present in a soda-acid fire extinguisher combine to ...

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  17. The flame of a candle is shaped like a .

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  18. The middle zone of a candle flame is also called the zone of combusti...

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  19. The efficiency of a fuel cell is given by:

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  20. Acid rain occurs when gas present in the atmosphere dissolves in rain...

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