Which law states that the volume of an ideal gas at constant pressure is directly proportional to its absolute temperature?

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Question

This question was previously asked in

SSC CHSL Previous Paper 90 (Held On: 13 Oct 2020 Shift 1)

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Answer 1

The correct answer is Charles's law.

Explanation:

In 1787, Jacques Charles formulated Charles' Law or the Law of Volume.
According to this law, at constant pressure, the volume of a given mass of gas is directly proportional to its temperature.
This is mathematically represented as V/T = Constant, at constant pressure.

F1 P.Y Madhu 23.04.20 D5

If the pressure remains constant, the volume of the given mass of a gas is directly proportional to its absolute temperature.
i.e. V ∝ T

Additional Information

Boyle's law:
- For a fixed mass of gas at a constant temperature, the volume is inversely proportional to the pressure.
- P∝1/V
- PV = constant (If the temperature remains constant, the product of pressure and volume of a given mass of a gas is constant.)
Avogadro's law:
- Avogadro’s Law states that at constant temperature and pressure, all equal volumes of gases will have an equal number of molecules" which means 'V' is directly proportional to the 'Number of molecules'.
Joule's law:
- The ratio of the energy consumed in mechanical work (W) and the heat generated (H) by that work remains constant.
- J is Joule's constant. J = 4.186 joule/calorie