Published by:
CGP EDU Academic Team
Published on: September 12, 2026
A constant pressure air thermometer gave a reading of 47.5 units of volume when immersed in ice cold water, and 67 units in a boiling liquid. The boiling point of the liquid will be
Text Solution
Verified by ExpertsThe correct answer is:
C
Initial volume $V_1 = 47.5$ units
Temperature of ice-cold water $T_1 = 0^\circ \mathrm{C} = 273 \, \mathrm{K}$
Final volume of $V_2 = 67$ units
Applying Charle’s law, we have $\frac{V_1}{T_1} = \frac{V_2}{T_2}$
(where temperature $T_2$ is the boiling point)
or $T_{2} = \frac{V_{2}}{V_{1}} \times T_{1} = \frac{67 \times 273}{47.5} = 385 \, K = 112^\circ C$
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