Question

With reference to uses of hydrogen give reason for : a) Hydrogen is not used in air balloons.

Answer 1

Answer:

HOWEVER, Hydrogen is not used in balloons because it is highly explosive and flammable.

Explanation:

Helium gas is lighter than air, therefore, a helium balloon rises, it is known as a noble gas and is therefore not reactive. Hydrogen is also lighter than air and even lighter than helium

Answer 2

Hydrogen is another gas lighter than air; it's even lighter than helium. Hydrogen, however, is not used in balloons and this demonstration shows why. Helium is a special gas called a Noble Gas, which means it doesn't burn. When a match is held near a helium-filled balloon, the balloon pops.