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Heat and Mass Transfer

Heat and Mass Transfer
According to Wien's law, the wavelength corresponding to maximum energy is proportion to

Absolute temperature (T)
I²
T
F

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Heat and Mass Transfer
Heat is closely related with

Liquids
Entropy
Temperature
Energy

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Heat and Mass Transfer
Which of the following property of air does not increase with rise in temperature?

Thermal diffusivity
Density
Thermal conductivity
Dynamic viscosity

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Heat and Mass Transfer
When absorptivity (α) = 1, reflectivity (ρ) = 0 and transmissivity (τ) = 0, then the body is said to be a

White body
Black body
Grey body
Opaque body

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Heat and Mass Transfer
The concept of overall coefficient of heat transfer is used in case of heat transfer by

Conduction and convection
Radiation
Convection
Conduction

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

Increases
Remain same
May increase or decrease depending upon temperature
Decreases

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