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Heat Transfer

Heat Transfer
Radiation heat losses from satisfactorily insulated high pressure boilar may be about __________ percent.

18
7
26
1

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Heat Transfer
The driving potential for the crystal growth during crystallisation is the __________ of the solution.

Concentration
Super-saturation
Viscosity
Density

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Heat Transfer
Mechanical recompression evaporation is used in the production of

Fruits jam
Salt
Distilled water
Alcohol

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Heat Transfer
With increase in temperature, the thermal conductivity of a gas

May increase or decrease depending on the type of gas
Remains same
Decreases
Increases

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Heat Transfer
Viscous & heat sensitive liquids are concentrated in __________ evaporators.

None of these
Open pan
Agitated film
Long tube

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Heat Transfer
A BTU/hr.ft.2 °F is equal to

4.88 kcal/hr. m.2°C
None of these
1 kcal/hr. m²°C
1 kcal/hr. m².°K

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