Why do balloons filled with hydrogen gas move up in the air?

Due to the up thrust of air

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Due to the weight of the balloon

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Due to the buoyant force

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Both A and C

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Solution

The correct option is D Both A and C
A body experiences an upthrust and upward force (buoyant force) in gas too. A balloon filled with hydrogen gas moves in the upward direction due to the upthrust of air present underneath it. This happens due to the fact that hydrogen gas is lighter than air.

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Similar questions

Why do balloons filled with hydrogen gas move up in the air?

Q. Define thrust. What is the up thrust experienced by a balloon of volume 120

m^{3}

filled with hydrogen. The density of air = 1.140

\frac{k g}{m^{3}}

and density of hydrogen = 0.081

\frac{k g}{m^{3}}

at room temperature. What is the maximum weight this balloon can lift? [3 MARKS]

Q. Give reasons: [3 MARKS]
a) Clothes do not dry quickly on a cloudy day.
b) It is not advisable to fill hydrogen gas in big air balloons.
c) Balloons filled with helium gas float up into the air.

Q. Balloon '

A

' is filled with air and Balloon '

B

' is filled with

H_{2}

gas. Which balloon rises high up in the sky?

What is the up thrust experienced by a balloon of volume 120 $m^{3}$ filled with hydrogen. The density of air = 1.140 $\frac{k g}{m^{3}}$ and density of hydrogen = 0.081 $\frac{k g}{m^{3}}$ at room temperature. What is the maximum weight this balloon can lift?

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Why do balloons filled with hydrogen gas move up in the air?

The correct option is D Both A and CA body experiences an upthrust and upward force (buoyant force) in gas too. A balloon filled with hydrogen gas moves in the upward direction due to the upthrust of air present underneath it. This happens due to the fact that hydrogen gas is lighter than air.

The correct option is D Both A and C
A body experiences an upthrust and upward force (buoyant force) in gas too. A balloon filled with hydrogen gas moves in the upward direction due to the upthrust of air present underneath it. This happens due to the fact that hydrogen gas is lighter than air.