Question

Helium is preferred to be used in balloons instead of hydrogen because it is
(a) incombustible
(b) lighter than hydrogen
(c) more abundant than hydrogen
(d) non polarizable

Answer 1

Explanation:

b) lighter than hydrogen

hope it helps

Answer 2

Answer:

answer is incombustible.

Explanation:

The gases like hydrogen and helium are used in the balloons because they are lighter than the air. But helium is more preferable than hydrogen because helium is non-combustible and that's why it is more safe to use.