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In summer, when the valve of a bicycle t...

In summer, when the valve of a bicycle tube is removed the escaping air appears cold. Why ?

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This happens due to adiabatic expansion of the air of the tube of a bicycle.
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KUMAR PRAKASHAN-THERMODYANMICS -Section-C (Objective Questions (VSQs))
  1. Write two essential characteristics of an ideal heat engine.

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  2. Under which ideal condition, the efficiency of a carnot engine become ...

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  3. In summer, when the valve of a bicycle tube is removed the escaping ai...

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  4. When air of the atmosphere rises up it cools. Why ?

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  5. Why does a gas get heated on compression ?

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  6. Can two isothermal curves intersect each other?

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  7. Is the rusting of iron be a reversible process ? Why ?

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  8. For all gases CP - CV constant, then all gases CP/CV hold constant ?

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  9. Which quantity remains constant in an adiabatic process ?

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  10. Is the specific heat of water and ice be the same? Give their values.

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  11. What is the total work done in a cyclic process ?

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  12. With what the internal energy of real gases be determined ?

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  13. Melting of ice is an adiabatic or an isothermal process ?

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  14. Can PV = RT be described with an isothermal or an adiabatic process ?

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

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

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

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

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

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

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