To prepare hydrogen gas in the laboratory,why no flame shod be brought near the apparatus?

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Solution

Dear Student

While laboratory preparation of hydrogen , the apparatus must be airtight and no naked flame should be brought close to it, because it is highly inflammable.
It reacts violently with air hence no flame should be brought closer to it.
It is collected from the apparatus using downward displacement with water.

Regards

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Similar questions

Give reasons :

(a) Hydrogen is collected by the downward displacement of water and not of air, even though it is lighter than air.

(b) A candle brought near the mouth of a jar containing hydrogen gas starts burning but is extinguished when pushed inside the jar.

(d) Apparatus for laboratory preparation of hydrogen should be air tight and away from a naked flame.

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