Assertion : The size of a hydrogen balloon increases as it rises in air.
Reason: The material of the balloon can be easily stretched.

If both assertion and reason are true but the reason is the correct explanation of assertion.

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If both assertion and reason are true but the reason is not the correct explanation of assertion.

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If assertion is true but reason is false.

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If both the assertion and reason are false.

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If reason is true but assertion is false.

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Solution

The correct option is B If both assertion and reason are true but the reason is not the correct explanation of assertion.
The size of a hydrogen balloon increases as it rises in air.It is due to decreasing air pressure in the the upper region of atmosphere. The flexible material of the balloon only helps it not to burst.

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Similar questions

\to τ = \to r \times \to F b u t \to τ \neq \to F \times \to r .

Read the assertion and reason carefully to mark the correct option out of the options given below :

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

(d) If the assertion and reason both are false.

(e) If assertion is false but reason is true.

Assertion: Acetic acid does not undergo haloform reaction.

Reason: Acetic acid has no alpha hydrogens.

Assertion : Salts like $K C l, K N O_{3}$ i.e., inert electrolytes are used in salt bridge.

Reason : An inert electrolyte can easily be filled in the U-tube.

Assertion : Salts like $K C l, K N O_{3}$ i.e., inert electrolytes are used in salt bridge.

Reason : An inert electrolyte can easily be filled in the U-tube.

θ

\to A

\to B

tan θ = \frac{\to A \times \to B}{\to A . \to B}

\to A \times \to B

\to A . \to B

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