Month: February 2019

The change in enthalpy, when a unit quantity of gas is absorbed by relatively large quantity of adsorbent (on which a definite concentration of the adsorbed gas already exists) is termed as the_________________?

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The change in enthalpy, when a unit quantity of gas is absorbed by relatively large quantity of adsorbent (on which a definite concentration of the adsorbed gas already exists) is termed as the_________________?

A. Differential heat of adsorption
B. Heat of wetting
C. Integral heat of adsorption
D. None of these

A 25 cm × 25 cm × 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 × 1m × 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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A 25 cm × 25 cm × 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 × 1m × 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 ____________________?

A. 1000
B. 1500
C. 2000
D. 2500

Henry’s law states that the ________________________?

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Henry’s law states that the ________________________?

A. Partial pressure of a component over a solution is proportional to its mole fraction in the
liquid
B. Partial pressure of a component over a solution is proportional to the mole fraction in the
vapour
C. Vapour pressure is equal to the product of the mole fraction and total pressure
D. Partial pressure is equal to the product of the mole fraction and total pressure