Question

Which gas is to be filled in balloons which. makes it to fly high? Give reasons.​

Answer 1

helium and hydrogen. Most cases hydrogen because hydrogen is the lightest gas and some cases helium because helium is the second lightest gas.

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Answer 2

Answer:

Hydrogen gas is usually used in balloons

Explanation:

As it is lighter in mass and thus can fly high

P.s : As per my knowledge :)

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.Not Sure though :D