Refrigeration and Air Conditioning
In a domestic refrigerator, a capillary tube controls the flow of refrigerant from the

Condenser to the evaporator
Evaporator to the thermostat
Expansion valve to the evaporator
Condenser to the expansion valve

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Refrigeration and Air Conditioning
Environmental protection agencies advice against the use of chlorofluorocarbon refrigerants since

These react with oxygen and cause its depletion
These react with ozone layer
These react with water vapour and cause acid rain
These react with plants and cause greenhouse effect

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Refrigeration and Air Conditioning
A refrigeration system

Removes heat from a high temperature body and delivers it to a low temperature body
None of the listed here
Removes heat from a low temperature body and delivers it to a high temperature body
Rejects energy to a low temperature body

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