Q. A 25 cm x 25 cm x 1 cm flat sheet weighing 1.2 kg initially was dried from both sides under constant drying rate conditions. It took 1500 seconds for the weight of the sheet to reduce to 1.05 kg. Another 1m x 1m x 1cm flat sheet of the same material is to be dried from one side only.Under the same constant drying rate conditions, the time required for drying (in seconds) from its initial weight of 19.2 kg to 17.6 kg is

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Q. With increase in temperature, the rate of leaching increases, because the

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Q. Humidity chart is useful for the solution of problems concerning condensation, vaporisation and air conditioning. At a given dry bulb temperature, value of humidity obtained from the humidity chart directly, is in terms of __________ humidity.

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Q. The apex of an equilateral-triangular coordinate (in ternary liquid system) represents a/an

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Q. A slurry is to be dried to produce flaky solid. Which dryer would you recommend ?

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Q. Which of the following psychrometric processes is followed by water vapour laden unsaturated air, when it is passed through solid or liquid adsorbent ?

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Q. Boiling point diagram is

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Q. When acetone is added in a two layer mixture of methyl isobutyl ketone and water at 30°C, the acetone distributes between the two layers and the composition of the layer follows two solubility curves. For this system,

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Q. Steam distillation is used to

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Q. Freundlich equation applies to the adsorption of solute from

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Q. For ethanol-water system, the lowering of distillate quality from 95% to 92% will cause __________ plate requirement.

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Q. A packed tower compared to a plate tower for a particular mass transfer operation

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Q. Which of the following is the most commonly used leaching solvent in vegetable oil industry ?

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Q. In an absorber, HETP does not vary with the

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Q. Large quantity of silica gel is normally dried in a __________ dryer.

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Q. For the same system, if the same liquid used in an absorber is decreased, the tower height will

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Q. Which of the following same diameter columns gives lowest pressure drop per unit height ?

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Q. Diffusion in concentrated solutins differs from that in dilute solutions, because of the change in the __________ with the concentration of the solution.

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Q. Stage efficiency in a leaching process depends on the

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Q. Operating velocity in a packed tower is usually __________ the flooding velocity.

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