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Dittus-Boeltier equation

Sieder-Tate equation

Nusselt equation

None of these

The heat transfer rate is low in view of the large temperature drop

It is difficult to maintain

It is not economic

None of these

Counter flow with process stream on shell side

Counter flow with process stream on tube side

Parallel flow with process stream on shell side

Parallel flow with process stream on tube side

Absorb or emit

Refract

Reflect

Both B & C

√(A₁ . A₂)

√(A₁ + A₂)

1/2 √(A₁ . A₂)

2 √(A₁ . A₂)

Re and Pr

Re and Gr

Pr and Gr

Re and Sc

Open pan

Long tube

Agitated film

None of these

1

< 1

> 1

Between 0 and 1

Temperature reaches 100° C

Vapour pressure equals 76 cm of Hg

Saturated vapour pressure equals the external pressure on its surface

Saturated vapour pressure is less than the atmospheric pressure

Medium

Temperature

Surface

None of these