Mass Transfer Mock Test 7

10%

Question 1 of 10

1. The separation is possible if the ratio of weight fraction of solute in extract to raffinate is 0.15. Also given the ratio of dilutant in raffinate to extract is 0.5.

False

True

Question 1 of 10

Question 2 of 10

2. Liquid-liquid mixture is separated with solvent extraction by adding _______ solvent.

Soluble

All of the mentioned

Insoluble

Partially soluble

Question 2 of 10

Question 3 of 10

3. Find the rate of extract in mol/hr if

	Rate(mol/hr)	Composition
Feed	100	0.5
Solvent	50	0
Residue	25	0.25

150

125

100

Question 3 of 10

Question 4 of 10

4. The Azeotropic composition of the solute makes the extraction process economical.

True

False

Question 4 of 10

Question 5 of 10

5. Every stage of extractor act as mixer and settler in the extraction process.

False

True

Question 5 of 10

Question 6 of 10

6. For getting rapid absorption rate, low pressure drop and more heat transfer we need?

No viscous solvent

Low viscous solvent

None of the mentioned

More viscous solvent

Question 6 of 10

Question 7 of 10

7. The reboiler which is most preferred is

Internal

All of the mentioned

Middle

External

Question 7 of 10

Question 8 of 10

8. If the pure solvent is used find the value of “ys” by analysing the below single stage extractor.

Where, F,S are feed and solvent

None of the mentioned

0-1

Question 8 of 10

Question 9 of 10

9. In extract, the usage of solvent should be less.

True

False

Question 9 of 10

Question 10 of 10

10. By adding Entrainer the __________ azeotropes forms.

High boiling

Low boiling

None of the mentioned

Question 10 of 10