The boiling point of carbon dioxide is

A. -20.5°C

B. -50°C

C. -63.3°C

D. -78.3°C

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  1. The horizontal and non-uniformly spaced lines on a psychrometric chart indicates
  2. In chemical dehumidification process,
  3. The suction pipe diameter of refrigerating unit compressor in comparison to delivery side is
  4. Vertical lines on pressure-enthalpy chart show constant
  5. During adiabatic saturation process on unsaturated air __________ remains constant.
  6. The bypass factor for a cooling coil
  7. During sensible cooling of air, specific humidity
  8. The pressure at the outlet of a refrigerant compressor is called
  9. In a domestic vapour compression refrigerator, the refrigerant commonly used is
  10. Ammonia is
  11. The colour of the flame of halide torch, in case of leakage of Freon refrigerant, will change to
  12. Chaperon equation is a relation between
  13. A vapour absorption refrigeration system
  14. The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour…
  15. Air refrigeration operates on
  16. A refrigerating system operating on reversed Brayton refrigeration cycle is used for maintaining 250…
  17. Moisture should be removed from refrigerants to avoid
  18. In a refrigeration system, the expansion device is connected between the
  19. The condensing pressure due to the presence of non-condensable gases, as compared to that actually required…
  20. An important characteristic of absorption system of refrigeration is
  21. Air refrigerator works on
  22. One ton of refrigeration is equal to the refrigeration effect corresponding to melting of 1000 kg of…
  23. The change in evaporator temperature in a refrigeration cycle, as compared to change in condenser temperature,…
  24. For obtaining high COP, the pressure range of compressor should be
  25. During sensible cooling of air ________ decreases.
  26. The specific humidity during dehumidification process
  27. The boiling point of ________ is 10.5°C.
  28. The process, generally used in winter air-conditioning to warm and humidity the air, is called
  29. Nusselt number (NN) is given by
  30. If a gas is to be liquefied, its temperature must be