Question

Choose the correct answer.

Helium is preferred to hydrogen for filling balloons because _____________

• A. lighter than air
• B. almost as light as hydrogen
• C. non-combustible
• D. inflammable

Answer 1

The correct option is C

non-combustible

Explanation for the correct answer-

Option (c) non-combustible - Helium is an inert gas that is noncombustible which is very stable and non-reactive.

Explanation for the incorrect answer-

Option (a) lighter than air - Helium is heavier than hydrogen.

Option (b) almost as light as hydrogen. Helium is heavier than hydrogen.

Option (d) inflammable - Helium is non-inflammable gas to fill part balloons.

Therefore option (c) is the correct answer.