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February 2019

With increase in absolute humidity, the dew point of an unsaturated mixture of air and water vapor (at constant pressure and temperature) ?

Mass Transfer /
With increase in absolute humidity, the dew point of an unsaturated mixture of air and water vapor (at constant pressure and temperature) ?

A. Increases
B. Remains unchanged
C. Decreases
D. Decreases linearly

With increase in absolute humidity, the dew point of an unsaturated mixture of air and water vapor (at constant pressure and temperature) ? Read More »

Mass Transfer

Heat in BTU necessary to increase the temperature of 1 lb of gas and its accompanying vapour by 1°F is called the________________?

Mass Transfer /
Heat in BTU necessary to increase the temperature of 1 lb of gas and its accompanying vapour by 1°F is called the________________?

A. Latent heat
B. Humid heat
C. Specific heat
D. Sensible heat

Heat in BTU necessary to increase the temperature of 1 lb of gas and its accompanying vapour by 1°F is called the________________? Read More »

Mass Transfer

The minimum number of theoretical plates is required for achieving a given separation in distillation column with_________________?

Mass Transfer /
The minimum number of theoretical plates is required for achieving a given separation in distillation column with_________________?

A. No reflux
B. Total reflux
C. Zero reflux ratio
D. Minimum reflux ratio

The minimum number of theoretical plates is required for achieving a given separation in distillation column with_________________? Read More »

Mass Transfer

The drying time between fixed moisture contents within the ‘constant rate period’ is proportional to (assuming that drying occurs from all surfaces of the solid) (where, T = thickness of the solid) ?

Mass Transfer /
The drying time between fixed moisture contents within the ‘constant rate period’ is proportional to (assuming that drying occurs from all surfaces of the solid) (where, T = thickness of the solid) ?

A. √T
B. T
C. T1.5
D. T3

The drying time between fixed moisture contents within the ‘constant rate period’ is proportional to (assuming that drying occurs from all surfaces of the solid) (where, T = thickness of the solid) ? Read More »

Mass Transfer