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How is hydrogen gas identified?

Answer and explanation

Correct answer: By a pop sound near a burning splint

Hydrogen is a combustible gas, so it is tested by bringing a burning splint near the mouth of the test tube containing the gas. If hydrogen is present, it burns rapidly and produces a characteristic ‘pop’ sound; hence option B is correct. Lime water turning milky is the test for carbon dioxide. Turmeric and litmus colour changes indicate alkaline conditions, not specifically hydrogen gas.

Related tags

HydrogenPop TestGas IdentificationCombustionAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour

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