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Hydrogen gas is identified by what?

Answer and explanation

Correct answer: By a pop sound near a burning splint

Hydrogen is a combustible gas, so its confirmatory school-level test is the pop test. When a burning splint is brought near the mouth of a vessel containing hydrogen, the gas burns rapidly with a characteristic ‘pop’ sound; therefore option B is correct. Limewater turning milky indicates carbon dioxide, while turmeric and phenolphthalein colour changes indicate alkaline conditions, not hydrogen.

Related tags

HydrogenPop TestGas IdentificationAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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