Give the characteristic test for NO2 i.e. Nittrogen dioxide
plz do not give answers regarding sulphur dioxide.
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Answer: The gas is brown in colour. It has a pungent smell. It changes blue litmus paper to red.
Explanation:
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. This indicates that an acidic gas is present in the test tube.
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