Refrigeration and Air Conditioning
Pick up the wrong statement. A refrigerant should have

High latent heat of vaporisation
High boiling point
Higher critical temperature
Tow specific heat of liquid

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

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Refrigeration and Air Conditioning
The bypass factor of a cooling coil decreases with

Decrease in fin spacing and increase in number of rows
Increase in fin spacing and decrease in number of rows
Decrease in fin spacing and decrease in number of rows
Increase in fin spacing and increase in number of rows

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