With increase in temperature, the total emissivity of conductors____________________?

A. Single effect evaporator
B. Single effect evaporator followed by a crystalliser
C. Multiple effect evaporator
D. Multiple effect evaporators followed by a crystalliser

A. Increases
B. Decreases
C. Remain constant
D. Passes through a maxima

A. Length
B. Area
C. Volume
D. None of these

A. Saving of steam
B. Realisation of multiple effect economy in a single effect
C. Both A. and B.
D. None of these

A. (ΔT)2
B. (ΔT)4
C. (ΔT)3
D. √(ΔT)

A. In the central core of the fluid
B. Uniformly distributed throughout the fluid
C. Mainly confined to a thin film of fluid near the surface
D. None of these