A balloon filled with hydrogen rises in the air, because ______?

ہائیڈروجن سے بھرا ہوا ایک غبارہ ہوا میں بڑھتا ہے ، کیوں کہ ______؟

The weight of hydrogen is less than the weight of the air.

The weight of hydrogen is greater than the weight of the air.

The weight of hydrogen is equal to the weight of the air.

None of these

Hydrogen is lighter than air, so a hydrogen-filled balloon experiences buoyant force that makes it rise.

This is due to Archimedes’ principle, where lighter gases are pushed upward by heavier surrounding air.