Question 1 : Equilibrium-moisture curves of different solids
1. are different
2. depend on the humidity of the gas
3. none of these
4. are same
View Answer   Discuss with Members

Question 2 : Degree of freedom for leaching and solvent extraction process is
1. 1
2. 0
3. 2
4. 3
View Answer   Discuss with Members

Question 3 : Which of the following equipments is not used in liquid-liquid extraction ?
1. Agitated vessels
2. Pachuka tank
3. Centrifugal extractors
4. Packed towers
View Answer   Discuss with Members

Question 4 : Azeotropism for ethyl alcohol-water system disappears by
1. increasing temperature
2. no means
3. decreasing pressure
4. increasing pressure
View Answer   Discuss with Members

Question 5 : Components, having widely different boiling point in a binary mixture, can be separated using __________ distillation.
1. simple
2. extractive
3. steam
4. molecular
View Answer   Discuss with Members

Question 6 : At __________ reflux, theoretical number of plates in a distillation coloumn is calculated using Fenske-Underwood equation.
1. maximum permissible
2. operating
3. minimum
4. total
View Answer   Discuss with Members

Question 7 : Separation of a mixture of two gases by absorption in the liquid solvent depends upon the difference in their
1. density
2. viscosity
3. solubility
4. relative volatility
View Answer   Discuss with Members

Question 8 : Schimdt number and Lewis number for pure air at atmospheric conditions are respectively
1. 1 and 0
2. < 1 and ? 1
3. 0 and ? 1
4. >1 and ? 1
View Answer   Discuss with Members

Question 9 : Molecular diffusion is caused by the
1. thermal energy of the molecules.
2. transfer of molecules from low concentration to high concentration region.
3. activation energy of the molecules.
4. potential energy of the molecules.
View Answer   Discuss with Members

Question 10 : Which of the following decreases during evaporative cooling process with recirculated water supply ?
1. Partial pressure of vapour
2. Relative humidity
3. Wet bulb temperature
4. None of these
View Answer   Discuss with Members