11. Drift in a cooling tower is
12. Pick out the correct statement.
13. In the constant rate period of the rate of drying curve for batch drying,
14. The suitable evaporator for concentration of foaming liquids is a __________ evaporator.
15. At a given equilibrium pressure, with increase in temperature, the concentration of adsorbed gas on solid adsorbant
16. During dehumidification of unsaturated air wet bulb temperature & partial pressure of vapor are not constant. However, during evaporative cooling process with recirculated water supply, the __________ remains constant.
17. Which of the following liquid-vapor contacting devices provides maximum contact surface area for a particular duty?
18. It takes 6 hours to dry a wet solid from 50% moisture content to the critical moisture content of 15%. How much longer it will take to dry the solid to 10% moisture content, under the same drying conditions? (The equilibrium moisture content of the solid is 5%).
19. A pure drug is administered as a sphere and as a cube. The amount of drug is the same in the two tablets. Assuming that the shape and size do not influence the mass transfer, the ratio of rate of dissolution in water at t = 0 for the cubic to spherical tablet is
20. Sticky material can be dried in a __________ dryer.
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