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A: Hot air balloon rises up by displacin...

A: Hot air balloon rises up by displacing the denser air of the atmosphere.
R: The given mass of a gas becomes less denser.

A

If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)

B

If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2)

C

If Assertion is true statement but Reason is false, then mark (3)

D

If both Assertion and Reason are false statements, then mark (4)

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