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Fire is extinguished by...

Fire is extinguished by

A

removing all combustible substances

B

cutting off supply of air

C

cooling the burning substances

D

all of these

Text Solution

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The correct Answer is:
D
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S CHAND IIT JEE FOUNDATION-COMBUSTION AND FLAME -Question Bank-17
  1. Which of the following statements is not true?

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  2. Match the points mentioned in column 'A' to the points mentioned in co...

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  3. Glass, metals, ceramics are the example of

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  4. Oxides of nitrogen and sulphur dissolve in rain water to produce

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  5. Explain why , we are advised not to sleep in a room having closed door...

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  6. Fire is extinguished by

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  7. Hydrogen gas has the highest calorific value, i.e., 150 kJ/kg, yet it ...

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  8. Which of the following statements is not true?

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  9. Charcoal does not produce a flame because

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  10. An electric spark is struck between two electrodes placed near each ot...

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  11. Identify the incorrect statement among the following:

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  12. Arrange the following fuels in increasing order of their calorific val...

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  13. In foam type fire-extinguisher what is responsible to put off fire?

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  14. The ignition temperature of white phosphorus is nearly equivalent to

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  15. In foam type fire-extinguisher which one of the following is present i...

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  16. Forest fire is an example of

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  17. The head of a safety matchstick contains

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  18. Which of the following does not form a flame?

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  19. The luminous zone of a flame:

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  20. Solve the following crossword with the help of the given clues: ...

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