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What is the significance of the heat cap...

What is the significance of the heat capacity ratio `C_P/C_V` for a gas ?

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By knowing ratio the kind of dimension of gas and degree of freedom for a molecules of gas can be determined.
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What is heat capacity of a substance ?

Molar heat capacity of an ideal gas in the process PV^(x) = constant , is given by : C = (R)/(gamma-1) + (R)/(1-x) . An ideal diatomic gas with C_(V) = (5R)/(2) occupies a volume V_(1) at a pressure P_(1) . The gas undergoes a process in which the pressure is proportional to the volume. At the end of the process the rms speed of the gas molecules has doubled from its initial value. The molar heat capacity of the gas in the given process is :-

Answer the following questions based on the P-T phase diagram of carbon dioxide : (a) At what temperature and pressure can the solid, liquid and vapour phases of CO_(2) coexist in equilibrium ? (b) What is the effect of decrease of pressure on the fusion and boiling point of CO_(2) ? (c) What are the critical temperature and pressure for CO_(2) ? What is their significance ? (d) Is CO_(2) solid, liquid or gas at (a) -70^(@)C under 1 atm, (b) -60^(@)C under 10 atm, (c) 16^(@)C under 56 atm ?

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During an adiabatic process, the pressure of gas is found to be proportional to the cube of its absolute temperature. The ratio of (C_(p)//C_(v)) for gas is :

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KUMAR PRAKASHAN-THERMODYANMICS -Section-C (Objective Questions (VSQs))
  1. Can PV = RT be described with an isothermal or an adiabatic process ?

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  2. Give the main points of second law of thermodynamics.

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  3. What is the significance of the heat capacity ratio CP/CV for a gas ?

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  4. You feel enjoy by having bath in shower in summer but not in winter. W...

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  5. Write difference between CP-CV=R, CP-CV=R/J

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  6. Is the specific heat of water is greater than that of sand ?

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  7. What is the main difference between P to T diagram of water and CO2 ?

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  8. Give the limitations for first law of thermodynamics.

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  9. How many fixed points does a absolute Kelvin scale have ? Write their ...

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  10. Does the internal energy of an ideal gas change in an isothermal proce...

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  11. Does the internal energy of an ideal gas change in an adiabatic proces...

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  12. What conclusion be made from zeroth law of thermodynamics ?

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  13. Is the coefficient of performance of refrigerator constant ?

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  14. Is it possible to convert internal energy into work or mechanical ener...

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  15. Is the carnot engine working under an isothermal state doesn't do any ...

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  16. What is the efficiency of a carnot's engine working between boiling po...

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  17. What is the triple point ?

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  18. Why work is an extensive quantity ?

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  19. Can any system possess heat ?

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  20. Can any system possess thermal energy ?

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