CHEMICAL ENGINEERING

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Question: At minimum reflux ratio for a given separation [A]. number of plates is zero. [B]. number of plates is infinity. [C]. minimum number of the theoretical plates is required. [D]. separation is most efficient. Answer: Option B Explanation: No…

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Question: Compound A is extracted from a solution of A + B into a pure solvent S. A Co-current unit is used for the liquid-liquid extraction. The inlet rate of the solution containing A is 200 moles of B/hr.m2 and…

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Question: A solid is being dried in the linear drying rate regime from moisture content Xo to XF. The drying rate is zero at X = 0 and the critical moisture content is the same as the initial moisture Xo.…

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Question: A pure drug is administered as a sphere and as a cube. The amount of drug is the same in the two tablets. Assuming that the shape and size do not influence the mass transfer, the ratio of rate…

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Question: H2S is being absorbed in a gas absorber unit. The height of the transfer unit based on the overall mass transfer coefficient on the gas side is 0.4 m. The equilibrium data is given by, y = 1.5 x.…

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Question: Experiments were conducted to determine the flux of a species A in a stagnant medium across a gas-liquid interface. The overall mass transfer co-efficient based on the liquid side for dilute systems for the above was estimated to be…

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Question: Minimum reflux ratio in a distillation column results in [A]. optimum number of trays. [B]. minimum reboiler size. [C]. maximum condenser size. [D]. minimum number of trays. Answer: Option C Explanation: No answer description available for this question.

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Question: Fenske equation determines the [A]. maximum number of ideal plates. [B]. height of the distillation column. [C]. minimum number of theoretical plates. [D]. optimum reflux ratio. Answer: Option C Explanation: No answer description available for this question.

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Question: It takes 6 hours to dry a wet solid from 50% moisture content to the critical moisture content of 15%. How much longer it will take to dry the solid to 10% moisture content, under the same drying conditions?…