Question

Which one of the following gases would most readily flow along the ground, if accidentally released?

1. Chlorine.
2. Ethyne
3. Helium.
4. Hydrogen.
5. Nitrogen.

Answer 1

[AI-generated answer — Bot GPT 3.5]

Helium would most readily flow along the ground if accidentally released, as it is lighter than air and has a tendency to rise.