The reason why balloons are filled with helium instead of hydrogen is:-

Hydrogen is toxic

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Hydrogen is lighter than helium

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Hydrogen is flammable

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Hydrogen escapes from the balloon quickly

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Solution

The correct option is C
Hydrogen is flammable

Hydrogen is lighter than air but it is flammable and as oxygen is present in the air, so the risk of explosion and fire is there. Helium is lighter than air and it is a non-combustible gas so it used to fill balloons.

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Similar questions

The reason why balloons are filled with helium instead of hydrogen is:-

Why is helium preferred instead of hydrogen to fill balloons?

Helium is preferred instead of hydrogen for filling balloons because it is:

Why only helium is filled in balloons??

Hydrogen and nitrogen are also light in weight.then why we don't use these gases??

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