Question: Freundlich equation applies to the adsorption of solute from [A]. dilute solutions, over a small concentration range. [B]. gaseous solutions at high pressure. [C]. concentrated solutions. [D]. none of these. Answer: Option A Explanation: No answer description available for…

Question: Chemisorption (chemical adsorption) is [A]. same as “Van der Waals” adsorption. [B]. characterised by adsorption of heat. [C]. an irreversible phenomenon. [D]. a reversible phenomenon. Answer: Option C Explanation: No answer description available for this question.

Question: Bollman extractor [A]. is a static bed leaching equipment. [B]. is used for extraction of oil from oilseed. [C]. is a centrifugal extractor. [D]. employs only counter-current extraction. Answer: Option B Explanation: No answer description available for this question.

Question: As the reflux ratio, in a continuous counter-current extraction is increased, the number of stages [A]. increase [B]. decrease [C]. remain unchanged [D]. can either increase or decrease, depends on the system Answer: Option B Explanation: No answer description…

Question: The apex of an equilateral-triangular coordinate (in ternary liquid system) represents a/an [A]. pure component [B]. binary mixture [C]. ternary mixture [D]. insoluble binary system Answer: Option A Explanation: No answer description available for this question.

Question: In extraction, as the temperature increases, the area of hetrogeneity (area covered by binodal curve) [A]. decreases [B]. increases [C]. remains unchanged [D]. none of these Answer: Option A Explanation: No answer description available for this question.

Question: In liquid extraction, if the selectivity is unity, then [A]. separation of the constituents is the most effective. [B]. no separation will occur. [C]. amount of solvent required will be minimum. [D]. solvent flow rate should be very low.…

Question: Fractional solvent extraction [A]. employs only one solvent [B]. employs two solvents [C]. results in low interfacial tension [D]. none of these Answer: Option B Explanation: No answer description available for this question.

Question: Heat sensitive materials with very high latent heat of vaporisation may be economically separated using [A]. liquid extraction [B]. distillation [C]. evaporation [D]. absorption Answer: Option A Explanation: No answer description available for this question.

Question: Channelling in a packed tower results from the [A]. high pressure drop [B]. maldistribution of liquid [C]. non-uniformity of packing [D]. both (b) and (c) Answer: Option D Explanation: No answer description available for this question.