Question 321. An aqueous solution of methanol is to be distilled in a tray column. High pressure steam is available as a source of heat. For a given reflux ratio and overhead composition, two options are being explored; (i) a reboiler is used and (ii) no reboiler is used but steam is fed directly to the bottom of the column. As compared to option (i), in option (ii)

Question 322. The boiling points of pure components of a binary system __________ with increase in total pressure of the system.

Question 323. Humid volume is the total volume in m³ of 1 kg of

Question 324. The cooling effect in a cooling tower can not be increased by

Question 325. The most efficient cooling tower out of the following is

Question 326. Weight of 1 m³ of humid air as compared to 1 m³ of dry air, under the same conditions, is

Question 327. For continuous drying of grannular or crystalline material, the dryer used is the __________ dryer.

Question 328. An air-water vapour mixture has a dry bulb temperature of 60°C and a dew point temperature of 40°C. The total pressure is 101.3 kPa and the vapour pressure of water at 40°C and 60°C are 7.30 kPa and 19.91 kPa respectively.The humidity of air sample expressed as kg of water vapour/kg of dry air is

Question 329. Which of the following processes is followed by unsaturated air (with dry bulb temperature 12°C and relative humidity 47%) passing through water spray washer (temperature of water being constant at 40°C?

Question 330. Pick out the correct statement.