Question: If f is defined as above, then which of the following applies to a feed at dew point ? [A]. f = 1 [B]. f < 1 [C]. f > 1 [D]. 0 < f < 1 Answer: Option…

Question: Flash distillation is suitable for separating the constituents of a binary system, which [A]. form minimum boiling azeotrope. [B]. have very wide boiling points. [C]. have very close boiling points. [D]. form constant boiling azeotrope. Answer: Option B Explanation:…

Question: If f = moles of vapour present per mole of feed, then the slope of feed line is (Mcabe-Thiele method) [A]. [B]. [C]. [D]. Answer: Option C Explanation: No answer description available for this question.

Question: Diffusion co-efficient generally depends upon the temperature, pressure & the nature of the components of the system. Its dimension is not the same as that of the [A]. mass transfer co-efficient. [B]. thermal diffusivity. [C]. kinematic viscosity. [D]. volumetric…

Question: In case of absorption & stripping, the interface of the liquid & gas phases are present in equilibrium, when the diffusional resistance of __________ is zero. [A]. interface [B]. gas phase [C]. liquid phase [D]. all ‘a’, ‘b’ &…

Question: Diffusion in concentrated solutins differs from that in dilute solutions, because of the change in the __________ with the concentration of the solution. [A]. degree of ideality [B]. viscosity [C]. both ‘a ‘& ‘b’ [D]. neither ‘a’ nor ‘b’…

Question: Dew point of an air-water vapor mixture [A]. decreases with decrease in pressure. [B]. at constant humidity & total pressure is fixed. [C]. corresponding to any point on the humidity chart is obtained by projecting a line through this…

Question: During dehumidification of unsaturated air wet bulb temperature & partial pressure of vapor are not constant. However, during evaporative cooling process with recirculated water supply, the __________ remains constant. [A]. wet bulb temperature [B]. partial pressure of water vapor…

Question: Dry bulb temperature of unsaturated air is more than its __________ temperature. [A]. dew point [B]. wet bulb [C]. both ‘a’ & ‘b’ [D]. neither ‘a’ nor ‘b’ Answer: Option C Explanation: No answer description available for this question.

Question: Batch tray dryers suffers from the disadvantage of [A]. high maintenance cost. [B]. non-uniform & low production rate. [C]. high labour cost & low heat economy. [D]. all ‘a’, ‘b’ & ‘c’. Answer: Option C Explanation: No answer description…