A pop sound is heard when a lighted match stick is brought near the mouth of a jar. This indicates the release of gas.
A
oxygen
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B
nitrogen
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C
hydrogen
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D
water-vapour
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Solution
The correct option is C hydrogen When a lighted matchstick is brought near the mouth of the jar containing a gas, it burns with a pop-up sound. This gas is hydrogen.
Therefore, option b is correct here.