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Heat and Mass Transfer

Heat and Mass Transfer
Unit of thermal conductivity in M.K.S. units is

K cal/kg m² °C
K calm/hr °C
K cal m/hr m² °C
K cal/hr m² °C

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Heat and Mass Transfer
The amount of radiation mainly depends upon the

Nature of the body
Temperature of the body
All of these
Type of surface of the body

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Heat and Mass Transfer
The transfer of heat by molecular collision is known as

Conduction
Convection
Radiation
None of these

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Heat and Mass Transfer
Thermal conductivity of air at room temperature in kcal/m hr °C is of the order of

0.01
0.1
0.02
0.002

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Heat and Mass Transfer
Reynolds number is the ratio of

Kinematic viscosity to thermal diffusivity
Inertia force to viscous force
None of these
Energy transferred by convection to that by conduction

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Heat and Mass Transfer
The heat is transferred by conduction, convection and radiation in

None of these
Condensation of steam in condenser
Melting of ice
Boiler furnaces

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