Refrigeration and Air Conditioning
For proper refrigeration in a cabinet, if the temperature and vapour pressure difference between cabinet and atmosphere is high, then

Smaller cabinet should be used
Bigger cabinet should be used
Perfectly tight vapour seal should be used
Refrigerant with lower evaporation temperature should be used

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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
Lithium bromide is used as a refrigerant and water as an absorbent
Water is used as a refrigerant and lithium bromide as an absorbent

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