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The lowest temperature at which a substa...

The lowest temperature at which a substance catches fire is called its

A

Ignition temperature

B

Maximum temperature

C

Room temperature

D

Normal temperature

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VGS PUBLICATION-BRILLIANT-COMBUSTION , FUELS AND FLAME-EXERCISE
  1. Is there any other procedure to prove that oxygen is needed for burnin...

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  2. The gas needed for combustion among the following is

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  3. The lowest temperature at which a substance catches fire is called its

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  4. The unit of calorific value

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  5. Spirit and petroleum turns into gas at

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  6. The type of combustion in which material suddenly burns into flames wi...

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  7. Why does candle give flame when it is burnt but why does coal burn wit...

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  8. Do all fuels produce same amount of heat when they are burnt?

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  9. What do we need to burn a material?

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  10. Have you observed material used to make school bell or bells in temple...

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  11. Name the three meninges. In which group of animals do you find all of ...

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  12. What do we need to burn a material?

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  13. Can we burn a material in the absence of air?

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  14. Why does a scented stick with burning stub does not catch fire when it...

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  15. Why does a scented stick with burning stub does not catch fire when it...

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  16. A slow fire bursts into a flame when air is blown on it, but a candle ...

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  17. If a large quantity of dry grass is set on fire in forests then it is ...

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  18. When an object catches fire, the fire is put off by covering with sand...

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  19. What makes match sticks to catch fire?

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  20. What is calorific value? Write its units

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