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Mechanical Engineering : R.A.C. Question & Answer in English

26.	Where is secondary refrigerant invariably used?

	A. Domestic refrigerators	B. Ice plants
	C. Deep freezers	D. Water coolers
	View Answer Solution Report Error
	Answer & Solution Hide Solution Box Answer : B Solution : Ice plants Report error Hide Error Report Box

27.	Which of the following refrigerants has the lowest boiling point?

	A. Freon- 12	B. Carbon-dioxide
	C. Ammonia	D. Sulphur dioxide
	View Answer Solution Report Error
	Answer & Solution Hide Solution Box Answer : B Solution : Carbon-dioxide Report error Hide Error Report Box

28.	The C.O.P. of a domestic refrigerator in comparison to domestic air conditioner will be

	A. Less	B. Same
	C. More	D. Unpredictable
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	Answer & Solution Hide Solution Box Answer : A Solution : Less Report error Hide Error Report Box

29.	When two refrigerants are mixed in proper proportions, the mixture forms a third refrigerant called

	A. Auxiliary	B. An zoetrope
	C. Synthetic	D. None of the above
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	Answer & Solution Hide Solution Box Answer : B Solution : An zoetrope Report error Hide Error Report Box

30.	An Electrolux refrigerator works on .............system.

	A. Vortex tube	B. Absorption refrigerant
	C. Vapour compression	D. Steam refrigeration
	View Answer Solution Report Error
	Answer & Solution Hide Solution Box Answer : B Solution : Absorption refrigerant Report error Hide Error Report Box

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