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.
Frequently asked questions
What is the correct answer to this question?
By a pop sound near a burning splint
Why is this the correct answer?
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.
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.
