For concentrating an aqueous solution of a material like anhydrous Na2SO4, whose solubility decreases with rise in temperature, the most suitable evaporator is a _______________ evaporator?

Related Mcqs:

Walls of a cubical oven are of thickness l, and they are made of material of thermal conductivity k. The temperature inside the oven is 100°C and the inside heat transfer coefficient is „3k/l’. If the wall temperature on the outside is held at 25°C, what is the inside wall temperature in degree centigrade ?

A. 35.5 B. 43.75 C. 81.25 D. 48.25...

Heat flux increases with temperature drop beyond the Leiden frost point in the plot of heat flux vs. temperature drop for a boiling liquid, because___________________?

A. Convection becomes important B. Conduction becomes important C. Radiation becomes important D. Sub-cooled boiling occurs...

Electro-magnetic spectrum range, which is important for radiation varies from _____________ microns?

A. 1 to 100 B. 0.5 to 50 C. 10 to 100 D. 100 to 1000...

Extremely large or small volumes of fluids are generally best routed through the shell side of a shell and tube heat exchanger, because of the________________?

A. Less corrosion problems B. Flexibility possible in the baffle arrangement C. Low pressure drop D. High heat transfer co-efficient...

With increase in temperature, the thermal conductivity of a gas ___________________?

A. Increases B. Decreases C. Remain same D. May increase or decrease depending on the type of gas...