A. 0.1
B. > 1
C. < 1
D. 1
A. Viscosity
B. Density
C. Thermal conductivity
D. Corrosive nature
A. Decrease
B. Increase
C. First decrease and then increase
D. First increase and then decrease
A. Feed is introduced in the first effect
B. Feed flows from low pressure to high pressure
C. No pumps are required between successive effects
D. None of these
In a backward feed multiple effect evaporator ___________________ ? Read More »
Chemical Heat Transfer A. 0.5
B. 1
C. 0
D. 2
A. Basket type
B. Horizontal tube
C. Short tube vertical
D. Long tube vertical
Steam is routed through the tube in case of a ______________ evaporator? Read More »
Chemical Heat Transfer A. Large scale evaporation of liquor is needed
B. Corrosive liquids are to be concentrated
C. Fuel is cheaply available
D. Evaporation on small scale is to be done
Multiple effect evaporation is generally recommended, when the______________________? Read More »
Chemical Heat Transfer A. 1.49
B. 1
C. 4.88
D. None of these
1 BTU/hr.ft.°F is equal to _____________ kcal/hr. m.°C? Read More »
Chemical Heat Transfer A. Black & smooth
B. Black & rough
C. White & smooth
D. White & rough
A _____________ surface has the maximum thermal emissivity out of the following ? Read More »
Chemical Heat Transfer A. The cooling rate will be the same for the two spheres and hence the two spheres will have
equal temperatures at any instant
B. Both the spheres will emit equal amount of radiation per unit time in the beginning
C. Both will absorb equal amount of radiation from the surrounding in the beginning
D. Both B. & C.
