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Heat Transfer

Heat Transfer
'Duhring's plot' is of use in

Absorption
Evaporation
Extractive distillation
Leaching

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Heat Transfer
The ratio of velocity head to tube side return loss in case of a multipass shell and tube heat exchanger is

4
43832
2
43834

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Heat Transfer
When vaporisation takes place directly at the heating surface, it is called

film boiling
all of the listed here
nucleate boiling
vapour binding

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Heat Transfer
What is the geometric mean of two heat transfer areas A₁ and A₂ ?

1/2 √(A₁ . A₂)
√(A₁ + A₂)
√(A₁ . A₂)
2 √(A₁ . A₂)

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Heat Transfer
Mechanical recompression evaporation is used in the production of

Alcohol
Salt
Distilled water
Fruits jam

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Heat Transfer
A body cools down from 75°C to 70°C in 10 minutes. It will cool down from 70° C to 65° C in __________ minutes.

10
Either B or C, depends on the mass of the body
>10

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MORE MCQ ON Heat Transfer

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