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If a gas is heated at constant volume, which of the following statements is true?

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If a gas is heated at constant volume, which of the following statements is true?

(a) Kinetic energy of the gas particles will decrease

(b) Pressure will increase

(c) Number of moles of gas will increase

(d) Volume will increase
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Right answer is (b) Pressure will increase

The explanation: P is inversely proportional to temperature and the volume is constant (PV = nRT). Moles of the gas are constant.
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