Which of the following is a test for hydrogen gas?
A
It burns with a pop sound.
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B
It turns blue litmus red.
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C
It turns lime water milky.
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D
It turns red litmus blue.
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Solution
The correct option is A It burns with a pop sound. Hydrogen gas is highly flammable. It burns with a pop sound when exposed to air. It is an indication that the gas is indeed hydrogen.