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Helium is used in observation of ballons because it is?

Helium is used in observation of ballons because it is?

A.

Light and combustible

B.

light and non-combustible

C.

heavy and combustible

D.

heavy and non-combustible

View answer & explanation

Correct answer is B

Helium floats because it is buoyant; its molecules are lighter than the nitrogen and oxygen molecules of our atmosphere and so they rise above it

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