Q. Ethanol-water mixture is a popular example of a mixture exhibiting the typical VLE curve.

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Q. Statement 1: Boiling point concentration diagram plots y against x. (Mole fraction in gas and liquid phase respectively).
Statement 2: VLE curve plots y against x. (Mole fraction in gas and liquid phase respectively).

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Q. Statement 1: Batch distillation is used for small capacity operations.
Statement 2: In food processing, batch distillation is used for desolventization.

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Q. When a system doesn’t obey Raoult’s law, the relative volatility is the ratio of the Henry’s constants for the two systems.

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Q. Liquid-liquid extraction is called leaching.

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Q. If extraction is done at the _____ of the solvent, it is called _____

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Q. Statement 1: Soya bean has a high oil content.
Statement 2: If the oil content is high, extraction is done by solvent extraction alone.

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Q. Oil seed cakes are obtained by _____

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Q. Statement 1: Partition coefficient pertains to solid-liquid extraction.
Statement 2: Leaching involves both heat and mass transfer.

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Q. Which among the following factors does NOT affect extraction?

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Q. Multi-stage counter-current extraction is expensive as more extractors are needed to strip the solid off the solvent.

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Q. Statement 1: Multi-stage cross-current extraction – the solids contain some amount of solute after every extraction.
Statement 2: Single-stage batch extractor – Used in labs and not on large scale as a solvent is continuously subjected to heat.

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Q. _____ is the diagonal of the x-y diagram.

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Q. Statement 1: In counter-current extraction, equilibrium is reached at every stage.
Statement 2: Right angled triangle method also called a difference point method is used to calculate the ideal number of stages for extraction.

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Q. Which of the following operations is carried out by extraction equipment?

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Q. A multi stage continuous counter-current extractor has the advantages of both co and counter current processes.

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Q. After extraction via solvent extraction, the cake serves to be a good source of _____

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Q. _____ is an important solvent for wet and edible materials.

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Q. What is extraction in paprika used for?

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Q. Statement 1: Caffeine is the active principle in coffee. It cannot be stripped off it.
Statement 2: Caffeine can be stripped off coffee by extraction.

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