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Heat and Mass Transfer

Heat and Mass Transfer
Which of the following has least value of conductivity?

Air
Glass
Plastic
Water

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Heat and Mass Transfer
Heat transfer takes place as per

Zeroth law of thermodynamics
Second law of the thermodynamics
Kirchoff's law
First law of thermodynamic

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Heat and Mass Transfer
The ratio of surface convection resistance to the internal conduction resistance is known as

Stanton number
Biot number
Prandtl number
Grashoff number

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Heat and Mass Transfer
Thermal conductivity of wood depends on

All of these
Temperature
Density
Moisture

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Heat and Mass Transfer
The value of the wave length for maximum emissive power is given by

Stefan’s law
Planck’s law
Wine’s law
Kirchhoff’s law

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Heat and Mass Transfer
Thermal conductivity of water _________ with rise in temperature.

May increase or decrease depending upon temperature
Increases
Remain same
Decreases

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MORE MCQ ON Heat and Mass Transfer

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