Hydrogen gas is identified by which test?
Answer and explanation
Correct answer: A pop sound near a burning splint
Hydrogen is a combustible gas. When a sample of hydrogen is brought carefully near a burning splint, it ignites and produces a characteristic ‘pop’ sound because it reacts rapidly with oxygen. Therefore, option C is the correct identification test. Limewater turning milky indicates carbon dioxide, turmeric changing colour suggests a base, and pink phenolphthalein also indicates alkalinity rather than hydrogen.
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What is the correct answer to this question?
A pop sound near a burning splint
Why is this the correct answer?
Hydrogen is a combustible gas. When a sample of hydrogen is brought carefully near a burning splint, it ignites and produces a characteristic ‘pop’ sound because it reacts rapidly with oxygen. Therefore, option C is the correct identification test. Limewater turning milky indicates carbon dioxide, turmeric changing colour suggests a base, and pink phenolphthalein also indicates alkalinity rather than hydrogen.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
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