Q5 of 38 Page 30

The substance that does not burn with flame is

When LPG, or dry grass, or camphor are burnt, they vaporize and thus a flame is generated. But, in the case of Charcoal, no flame is produced. So, it doesn’t give a flame.

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3

Magnesium ribbon on burning in air produces

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Which of the following is not a combustible substance?

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On placing an inverted tumbler over a burning candle, the flame extinguishes after some time. This is because of non-availability of

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If a person’s clothes catches fire, the best way to extinguish the fire is to: