The leaks in a refrigeration system using Freon are detected by

A. Halide torch which on detection produces greenish flame lighting

B. Sulphur sticks which on detection gives white smoke

C. Using reagents

D. Smelling

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

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  1. The specific humidity during cooling and dehumidification
  2. A refrigerant with the highest critical pressure is
  3. Most of the domestic refrigerators work on the following refrigeration system
  4. The refrigerant widely used in domestic refrigerators is
  5. The vapour compression refrigerator employs the following cycle
  6. The pressure at the inlet of a refrigerant compressor is called
  7. In a psychrometric process, the sensible heat added is 30 kJ/s and the latent heat added is 20 kJ/s.…
  8. The freezing point of sulphur dioxide is
  9. Which of the following cycles uses air as the refrigerant?
  10. During cooling and dehumidification, dry bulb temperature
  11. In a saturated air-water vapour mixture, the
  12. The temperature of ammonia after compression in a vapour compression system is
  13. The C.O.P of a refrigeration cycle with increase in evaporator temperature, keeping condenser temperature…
  14. The wet bulb temperature at 100% relative humidity is ________ dew point temperature.
  15. The coefficient of performance is the ratio of the refrigerant effect to the
  16. When the lower temperature of a refrigerating machine is fixed, then the coefficient of performance…
  17. The wet bulb depression indicates _________ humidity of the air.
  18. The C.O.P. of a heat pump working on a reversed Carnot cycle is
  19. The relative coefficient of performance is equal to
  20. The boiling point of ________ is 10.5°C.
  21. The index which correlates the combined effects of air temperature, relative humidity and air velocity…
  22. The process of under-cooling is generally brought about by
  23. In mechanical refrigeration system, the refrigerant has the maximum temperature
  24. Which of the following statement is correct?
  25. Moisture should be removed from refrigerants to avoid
  26. Which of the following refrigerant is highly toxic and flammable?
  27. The leakage in a refrigeration system using Freon is detected by
  28. Which of the following refrigerant has the lowest freezing point?
  29. The condition of refrigerant as it leaves the compressor in a vapour compression system is
  30. A vapour absorption refrigeration system