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प्रश्न
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.
विकल्प
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
A is false but R is true.
उत्तर
A is true but R is false.
Explanation:
The temperature at which the vapour pressure of a liquid becomes equal to the external pressure is called its boiling point. Atmospheric pressure decreases with increase in altitude.
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संबंधित प्रश्न
As the temperature increases, average kinetic energy of molecules increases. What would be the effect of increase of temperature on pressure provided the volume is constant?
Match the graphs between the following variables with their names:
| Graphs | Names | ||
| (i) | Pressure vs temperature graph at constant molar volume. | (a) | Isotherms |
| (ii) | Pressure vs volume graph at constant temperature. | (b) | Constant temperature curve |
| (iii) | Volume vs temperature graph at constant pressure. | (c) | Isochores |
| (d) | Isobars |
The volume of certain amount of an ideal gas is constant at STP. Which of the following changes is CORRECT at constant volume for the same amount of gas?
