Mass Transfer MCQs

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

Which of the following is the most suitable for extraction in a system having very low density difference?

Pick out the correct statement.

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?

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

A mixture of 10% C6H6 vapour in air at 25°C and 750 mm Hg has a dew point of 20°C. Its dew point at 30°C and 700 mm Hg will be around __________ °C.

For a binary mixture with low relative volatility,

In continuous distillation, the internal reflux ratio (Ri) and the external reflux ratio (Re) are related as

At a fixed total pressure, humidity depends only on the