Question

Which of the following is a test for hydrogen gas?

• A. It burns with a pop sound.
• B. It turns blue litmus red.
• C. It turns lime water milky.
• D. It turns red litmus blue.

Answer 1

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.