Refrigeration and Air Conditioning
In a lithium bromide absorption refrigeration system

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

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Refrigeration and Air Conditioning
A good refrigerant should have

High operating pressures and low freezing point
High specific volume and high latent heat of vaporisation
Low C.O.P. and low freezing point
High latent heat of vaporisation and low freezing point

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