Chemistry
Grade-9
Easy
Question
Why do the balloons filled with helium move up to the sky?
- They float due to the helium's inert properties.
- Fluorine-based rubber in the balloon reacts with helium to produce the buoyancy.
- The helium gas floats because its weight is too low.
- All of the above
Hint:
Helium is lighter than air.
The correct answer is: The helium gas floats because its weight is too low.
- Helium is called 'lighter than air gas' as it is less denser than air.
- When balloons are filled with helium gas it rises because of a force buoyancy.
- Hence, the balloons filled with helium move up to the sky.
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