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  • Assertion (A): The temperature at which vapour pressure of a liquid is equal to the external pressure is called boiling temperature. Reason (R) : At high altitude atmospheric pressure is high.

In the following questions, a statement of Assertion (A) followed by a statement of the reason (R) is given. Choose the correct option out of the choices given below each question.

Assertion (A): The temperature at which vapour pressure of a liquid is equal to the external pressure is called boiling temperature.
Reason (R) : At high altitude atmospheric pressure is high.
(i) Both A and R are true and R is the correct explanation of A.
(ii) Both A and R are true but R is not the correct explanation of A.
(iii) A is true but R is false.
(iv) A is false but R is true.

Answers (1)

The answer is the option (iii) A is true, but R is false.

Explanation: Boiling point of a liquid is the temperature at which the vapour pressure of the liquid is equal to the external pressure. As the altitude is high, the pressure is low.

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