1. Solubility of a substance which dissolves with an increase in volume and liberation of heat will be favoured by the
2. Entropy is a measure of the __________ of a system.
3. A chemical reaction will occur spontaneously at constant pressure and temperature, if the free energy is
4. Fundamental principle of refrigeration is based on the __________ law of thermodynamics.
5. For a spontaneous process, free energy
6. A refrigeration cycle is a reversed heat engine. Which of the following has the maximum value of the co-efficient of performance (COP) for a given refrigeration effect ?
7. In a working refrigerator, the value of COP is always
8. __________ increases with increase in pressure.
9. A refrigerator may be termed as a
10. For a stable phase at constant pressure and temperature, the fugacity of each component in a binary system __________ as its mole fraction increases.
11. Which of the following is not an intensive property ?
12. Out of the following refrigration cycles, which one has the minimum COP (Co-efficient of performance)?
13. Measurement of thermodynamic property of temperature is facilitated by __________ law of thermodynamics.
14. The theoretical minimum work required to separate one mole of a liquid mixture at 1 atm, containing 50 mole % each of n- heptane and n- octane into pure compounds each at 1 atm is
15. Keeping the pressure constant, to double the volume of a given mass of an ideal gas at 27°C, the temperature should be raised to __________ °C.
16. Entropy of an ideal gas depends upon its
17. Isobaric process means a constant process.
18. No work is done by the system, when a reaction occurs at constant
19. If the vapour pressure at two temperatures of a solid phase in equilibrium with its liquid phase are known, then the latent heat of fusion can be calculated by the
20. The freezing point of a liquid decreases when the pressure is increased, if the liquid __________ while freezing.
21. "At the absolute zero temperature, the entropy of every perfectly crystalline substance becomes zero". This follows from the
22. During Joule-Thomson expansion of gases
23. The accentric factor of a materical, 'ω', is defined as ω = -log10(Prsat)Tr-1 = 0.7, where, Prsat = reduced vapor pressure, Tr = reduced temperature. The value of accentric factor is always