A. Ethyl chloride or methyl chloride
B. Freon-12
C. Propane
D. NH3 or CO2
Related Mcqs:
- In jet refrigerators, the refrigerating fluid is practically always_________________?
A. Water
B. Ammonia
C. Freon
D. Brine - For a single component two phase mixture, the number of independent variable properties are_________________?
A. Two
B. One
C. Zero
D. Three - A domestic refrigerator has a/an ____________ cooled condenser?
A. Water
B. Air
C. Evaporative
D. Gas - The Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is__________________?
A. Less
B. More
C. Same
D. Dependent on climatic conditions - Domestic refrigerator usually works on the _____________ refrigeration cycle?
A. Carnot
B. Air
C. Absorption
D. vapour-ejection - Fresh domestic sewage is _______________ in color?
A. Grey
B. Dark brown
C. Red
D. Black - The most commonly used moderator in nuclear power plants is__________________?
A. Graphite
B. Light water
C. Heavy water
D. Beryllium - The most commonly used chemical coagulant in water treatment is________________?
A. Ferrous sulphate
B. Alum
C. Lime
D. Hydrazine - In sewage treatment, its sedimentation is speeded up by commonly adding__________________?
A. Hydrochloric acid
B. Lime
C. Copper sulphate
D. Sodium sulphate - Irradiation of water by ultraviolet light of suitable wavelength is commonly used for disinfection of water in___________________?
A. Food industry
B. Municipal sewage treatment
C. Petroleum refinery
D. Iron & steel plant
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