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If the average kinetic energy of the mol...

If the average kinetic energy of the molecules of a certain mass of a gas decreases, then

A

the gas becomes hot

B

the gas becomes cold

C

the gas expands

D

the gas contracts

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The correct Answer is:
B
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CHHAYA PUBLICATION-FIRST AND SECOND LAW OF THERMODYNAMICS-Exercise - Multiple Choice Questions (Mark 1)
  1. Which of the following quantities does not indicate any thermodynamic ...

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  2. The internal energy of a substance actually means

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  3. If the average kinetic energy of the molecules of a certain mass of a ...

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  4. If the volume of a gas of a certain mass changes from 1 L to 0.5 L at ...

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  5. The internal energy of a system is U(1). In a process, work done by th...

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  6. The work done by an ideal gas at constant temperature is 10 J. the amo...

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  7. The work done by an ideal gas at constant pressure is 10 J. The amount...

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  8. If the internal energy U and the work W are expressed in unit of J and...

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  9. C(v) = 5/2 R, for 1 mol of any diatomic ideal gas. The value of the ra...

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  10. If R = 2 cal cdot mol^(-1) cdot^(@)C^(-1) and hydrogen is assumed to b...

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  11. Work done becomes zero

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  12. The change in internal energy of an ideal gas becomes zero

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  13. The process in which changes in pressure, volume and temperature occur...

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  14. It is observed by comparing the specific heat of all solid, liquid and...

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  15. In an adiabatic expansion, the change in internal energy of 10 mol of ...

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  16. Which of the following relations does an ideal gas follow in an adiaba...

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  17. The slope of an isothermal curve is always

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  18. Heat cannot transmit from a body at lower temperature to a body at hig...

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  19. A system can go from state A to state B in two different processes 1 a...

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  20. In a given process of an ideal gas, dW = 0 and dQ < 0. Then for the g...

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