Give the characteristic test for N2
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(c) Test for O2 gas When a wooden splinter is brought near the mouth of the gas jar containing oxygen gas, it burns brightly as oxygen is the supporter of combustion. (d) Test for K, gas Hydrogen gas burns in the presence of air or oxygen with a pop sound when a burning candle is brought near it.
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Keep the moist blue litmus paper on the mouth of the test tube. Fill the test tube with the nitrogen gas and stopper it. Within a few minutes, the blue litmus paper changes to red litmus paper.
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