Q.1.
Stages in the extractor are _______________
- a) Equilibrium stages
- b) Theoretical stages
- c) Equilibrium or theoretical stages
- d) None of the mentioned
Q.2.
Extraction includes mixing alone.
- a) True
- b) False
Q.3.
Every stage of extractor act as mixer and settler in the extraction process.
- a) True
- b) False
Q.4.
If the pure solvent is used find the value of “ys” by analysing the below single stage extractor.
- a) 0
- b) 1
- c) 0-1
- d) None of the mentioned
Q.5.
Find the rate of extract in mol/hr if
- a) 100
- b) 125
- c) 150
- d) 50
Q.6.
Is the extraction is possible if a gas solvent is used for extracting solute from liquid mixture.
- a) True
- b) False
Q.7.
Find the process.
- a) Single stage batch process
- b) Single stage continuous process
- c) Multistage continuous process
- d) None of the mentioned
Q.8.
Find the sum of R and E if the sum of F and S iskmol.
- a) 20 kmol
- b) 40 kmol
- c) 60 kmol
- d) 80 kmol
Q.9.
Find the pure solvent rate if the feed ( F=kmol/hr) composition is 0.and mixture solute composition is 0.5.
- a) 10 kmol/hr
- b) 20 kmol/hr
- c) 30 kmol/hr
- d) 40 kmol/hr
Q.10.
Find the mixture composition of feed and pure solvent if the ratio of solvent to feed rate is 0.5 and the feed composition is 0.5.
- a) 0.5
- b) 0.25
- c) 0.33
- d) 0.4