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Give reasons : A candle brought near ...

Give reasons :
A candle brought near the mouth of a jar containing hydrogen gas starts burning but is extinguished when pushed inside the jar.

Text Solution

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Hydrogen is a combustible gas, but it does not support combustion. When a candle is brought near the mouth of a jar containing hydrogen, it burns with the help of oxygen present in the atmosphere. But when pushed the candle inside the jar, oxygen supply gets cuts off hence the fire gets extinguished.
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