Which of the following refrigerant is highly toxic and flammable?

A. Ammonia

B. Carbon dioxide

C. Sulphur dioxide

D. R-12

Related Questions

  1. When the air is passed through an insulated chamber having sprays of water maintained at a temperature…
  2. As relative humidity decreases, the dew point temperature will be ________ wet bulb temperature.
  3. Which of the following refrigerant has the lowest boiling point?
  4. The superheating in a refrigeration cycle
  5. R-12 is generally preferred over R-22 in deep freezers since
  6. Choose the correct statement
  7. During adiabatic saturation process on unsaturated air __________ remains constant.
  8. The relative coefficient of performance is equal to
  9. The process of under-cooling is generally brought about by
  10. The refrigerant widely used in domestic refrigerators is
  11. The bank of tubes at the back of domestic refrigerator is
  12. The thermostatic expansion valve operates on the changes in the
  13. The specific humidity during cooling and dehumidification
  14. In aircraft, air refrigeration Cycle is used because of
  15. Pick up the correct statement about giving up of heat from one medium to other in ammonia absorption…
  16. The higher temperature in vapour compression cycle occurs at
  17. Ammonia absorption refrigeration cycle requires
  18. The thermal diffusivity for gases is generally __________ those for liquids.
  19. The C.O.P. of a heat pump working on a reversed Carnot cycle is
  20. The boiling point of ________ is 10.5°C.
  21. The ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in…
  22. The thermostatic expansion valve is used in __________ type of evaporators.
  23. Formation of frost on evaporator in refrigerator
  24. Most air cooled condensers are designed to operate with a temperature difference of
  25. Which of the following refrigerant is highly toxic and flammable?
  26. Pressure of water vapour is given by
  27. In vapour compression cycle, the condition of refrigerant is saturated liquid
  28. Degree of saturation or percentage humidity is
  29. For unsaturated air, the dew point temperature is __________ wet bulb temperature.
  30. The refrigerant used for absorption refrigerators working on heat from solar collectors is a mixture…

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