Refrigeration and Air Conditioning
The evaporator changes the low pressure liquid refrigerant from the expansion valve into

Low pressure vapour refrigerant
Low pressure liquid and vapour refrigerant
None of these
High pressure liquid refrigerant

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Refrigeration and Air Conditioning
In a lithium bromide absorption refrigeration system

Ammonia is used as a refrigerant and lithium bromide as an absorbent
None of these
Water is used as a refrigerant and lithium bromide as an absorbent
Lithium bromide is used as a refrigerant and water as an absorbent

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