Home

The efficiency of a Carnot heat engine operating between absolute temperatures T1 and T2 (when, T1 > T2) is given by (T1 - T2)/T1. The co-efficient of performance (C.O.P.) of a Carnot heat pump operating between T1 and T2 is given by

A. T1/(T1-T2)

B. T2/(T1-T2)

C. T1/T2

D. T2/R1

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. Pick out the wrong statement.
  2. Gibbs free energy of a pure fluid approaches __________ as the pressure tends to zero at constant temperature.
  3. Solubility of a substance which dissolves with an increase in volume and liberation of heat will be…
  4. In the ammonia synthesis reaction, N2 + 3H2 2NH3 + 22.4 kcal, the formation of NH3 will be favoured…
  5. Heat pump
  6. In a homogeneous solution, the activity coefficient of a component depends upon the
  7. What is the number of degrees of freedom for liquid water in equilibrium with a mixture of nitrogen…
  8. Work done is a
  9. Grams of butane (C4H10) formed by the liquefaction of 448 litres of the gas (measured at (STP) would…
  10. Which of the following is affected by the temperature?
  11. The necessary and sufficient condition for equilibrium between two phases is
  12. The melting point of paraffin wax (which contracts on solidification) __________ with pressure rise.
  13. Which of the following identities can be most easily used to verify steam table data for superheated…
  14. The equation relating E, P, V and T which is true for all substances under all conditions is given by…
  15. The standard state of a gas (at a given temperature) is the state in which fugacity is equal to
  16. The temperature at the eutectic point of the system is the __________ temperature that can be attained…
  17. The point at which all the three (solid, liquid and gas) phases co-exist, is known as the __________…
  18. When liquid and vapour phases of one component system are in equilibrium (at a given temperature and…
  19. The acentric factor of a materical, 'ω', is defined as ω = -log10(Prsat)Tr-1 = 0.7, where,…
  20. Pick out the wrong statement
  21. For a thermodynamic system containing 'x' chemical species, the maximum number of phases that can co-exist…
  22. Enthalpy of a gas depends upon its
  23. For a multi-component system, the term chemical potential is equivalent to the
  24. A closed system is cooled reversibly from 100°C to 50°C. If no work is done on the system
  25. Change of state namely evaporation condensation, freezing and melting is an __________ process.
  26. Pick out the wrong statement.
  27. In a P-V diagram (for an ideal gas), an isothermal curve will coincide within adiabatic curve (through…
  28. Joule-Thomson co-efficient depends on the
  29. First law of thermodynamics deals with the
  30. At the absolute zero temperature, the entropy of every perfectly crystalline substance becomes zero.…