An ideal liquid refrigerant should

A Not have a subatmospheric vapour pressure at the temperature in the refrigerator coils
B Not have unduly high vapour pressure at the condenser temperature
C Both A and B
D Have low specific heat

Correct Answer: Both A and B

The given are opposite to the requirements of an ideal liquid refrigerants.
The ideal liquid refrigerant should have a sub atmospheric vapor pressure at the temperature in refrigerator coils and also should have high vapor pressure at the condenser temperature.
Bissoy MCQ
#Chemical Engineering #Chemical Engineering Thermodynamics

Related Questions

In vapour compression cycle, the condition of refrigerant is saturated liquid
A After passing through the condenser
B Before passing through the condenser
C After passing through the expansion throttle valve
D Before entering the expansion valve
In vapour compression cycle, the condition of refrigerant is high pressure saturated liquid
A After passing through the condenser
B Before passing through the condenser
C After passing through the expansion or throttle valve
D Before entering the expansion valve
The evaporator changes the low pressure liquid refrigerant from the expansion valve into
A High pressure liquid refrigerant
B Low pressure liquid and vapour refrigerant
C Low pressure vapour refrigerant
D None of these
In refrigerator, liquid receiver is required between condenser and flow controlling device, if quantity of refrigerant for system is
A Less than 2 kg
B More than or equal to 3.65 kg
C More than 10 kg
D There is no such consideration
In vapour compression refrigeration system, refrigerant occurs as liquid between
A Condenser and expansion valve
B Compressor and evaporator
C Expansion valve and evaporator
D Compressor and condenser
In order to collect liquid refrigerant and to prevent it from going to a ________, a device known as accumulator is used at the suction of compressor.
A Compressor
B Condenser
C Expansion valve
D Evaporator
One of the purposes of sub cooling the liquid refrigerant is to
A Reduce compressor overheating
B Reduce compressor discharge temperature
C Increase cooling effect
D Ensure that only liquid and not the vapour enters the expansion (throttling) valve
Solution X contains 7% (by weight) of liquid M and solution Y contains 14.5% (by weight) of liquid M. If 3 grams of solution X is mixed with 2 grams of solution Y, then liquid M accounts for what percent of the weight of the resulting solution?
A 6.09%
B 10%
C 10.75%
D 21.5%
The angle of contact between a glass capillary tube of length 10 cm and a liquid is 90 degree . If the capillary tube is dipped vertically in the liquid, then the liquid:
A Will rise in the tube
B Will get depressed in the tube
C Will rise -up to 10 cm in the tube and will over flow
D Will neither rise nor fall in the tube.
The angle of contact between a glass capillary tube of length 10 cm and a liquid is 90 Degree. If the capillary tube is dipped vertically in the liquid, then the liquid:
A Will rise in the tube
B Will get depressed in the tube
C Will rise-up to 10 cm in the tube and will over flow
D Will neither rise not fall in the tube

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