Chemistry Test Preparations On heat Transfer Part 1

Test Preparation on Chemistry Test Preparations On heat Transfer Part 1

1.

In Fourier's law, the proportionality constant is called the

1heat transfer co-efficient
2thermal diffusivity
3thermal conductivity
4Stefan-Boltzman constant

2.

The heat transfer co-efficient in film type condensation is __________ that for dropwise condensation

1greater than
2lower than
3is same as
4half

3.

Pick out the wrong statement.

1Bubble size increases with the dynamic viscosity of the liquid in case of nucleate pool boiling.
2Thermal conductivity of a dry material is more than that of the damp material.
3Ratio of its capacity to economy equals the steam consumption in kg/hr in an evaporator.
4Vaporisation of organic substances in evaporator mostly causes foam formation.

4.

'Duhring's plot' is of use in

1extractive distillation
2evaporation
3leaching
4absorption

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