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प्रश्न
Atmospheric pressures recorded in different cities are as follows:
| Cities | Shimla | Bangalore | Delhi | Mumbai |
| p in N/m2 | 1.01 × 105 | 1.2 × 105 | 1.02 × 105 | 1.21 × 105 |
Consider the above data and mark the place at which liquid will boil first.
पर्याय
Shimla
Bangalore
Delhi
Mumbai
उत्तर
Shimla
Explanation:
The temperature at which the liquid boils when the vapour pressure becomes equal to the atmospheric pressure is known as the boiling point of the liquid. When the atmospheric pressure is low, the boiling point of the liquid will be low. As Shimla has the lowest atmospheric pressure, it will boil first.
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संबंधित प्रश्न
Which of the following changes decrease the vapour pressure of water kept in a sealed vessel?
(i) Decreasing the quantity of water
(ii) Adding salt to water
(iii) Decreasing the volume of the vessel to one-half
(iv) Decreasing the temperature of water
Pressure exerted by saturated water vapour is called aqueous tension. What correction term will you apply to the total pressure to obtain pressure of dry gas?
The variation of vapour pressure of different liquids with temperature is shown in figure.
(i) Calculate graphically boiling points of liquids A and B.
(ii) If we take liquid C in a closed vessel and heat it continuously. At what temperature will it boil?
(iii) At high altitude, atmospheric pressure is low (say 60 mm Hg). At what temperature liquid D boils?
(iv) Pressure cooker is used for cooking food at hill station. Explain in terms of vapour pressure why is it so?
Which of the following has the dimension of ML0T–2?
