41. When the __________ the relative humidity of air decreases, despite an increase in the absolute humidity.
42. Molecular diffusivity of a liquid
43. Mass transfer co-efficient (K) and diffusivity (D) are related according to film theory as
44. Sand is dried in foundaries in a___drier.
45. Which of the following adsorbant is used in the refinning of sugar?
46. When the mixture to be distilled has a very high boiling point and the product material is heat sensitive, the separation technique to be used is __________ distillation.
47. The temperature to which a vapour gas mixture must be cooled (at varying humidity) to become saturated is called the __________ temperature.
48. Steady state temperature reached by a small amount of liquid evaporating into a large amount of unsaturated vapour-gas mixture is called the __________ temperature.
49. Hypersorption refers to a __________ process.
50. 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 1 m × 1 m × 1 cm 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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