In a liquid-liquid extraction, 10 kg of a solution containing 2 kg of solute C and 8 kg of solvent A is brought into contact with 10 kg of solvent B. Solvent A and B are completely immiscible in each other whereas solute C is soluble in both the solvents. The extraction process attains equilibrium. The equilibrium relationship between the two phases is Y* = 0.9X, where Y* is the kg of C/kg of B and X is kg of C/kg of A. Choose the correct answer.

Compound A is extracted from a solution of A + B into a pure solvent S. A Co-current unit is used for the liquid-liquid extraction. The inlet rate of the solution containing A is 200 moles of B/hr.m² and the solvent flow, rate is 400 moles of S/m².hr. The equilibrium data is represented by Y = 3X², where Y is in moles of a A/moles of B and X is in moles A/moles of S. The maximum percentage extraction achieved in the unit is

A

25%

B

50%

C

70%

D

90%

In a single stage extraction process, 10 kg of pure solvent S (containing no solute A) is mixed with 30 kg of feed F containing A at a mass fraction x_f = 0.2. The mixture splits into an extract phase E and a raf-finate phase R containing A at x_B = 0.5 and x_R = 0.05 respectively. The total mass of the extract phase is (in Kg)

A

6.89

B

8.89

C

10

D

8.25

The vapor pressure of the solvent decreased by 10 mm Hg, when a non-volatile solute was added to the solvent. The mole fraction of the solute in the solution is 0.2. What should be the mole fraction of the solvent, if the decrease in vapor pressure of the solvent is required to be 20 mm Hg.?

A

0.2

B

0.1

C

0.4

D

0.6

A solute distributes itself between two non-miscible solvents in contact with each other in such a way that, at a constant temperature, the ratio of its concentrations in two layers is constant, irrespective of its total amount". This is

A

The distribution law

B

Followed from Margule's equation

C

A corollary of Henry's law

D

None of these

A word arrangement machine, When given an input line of words, rearranges it in every step following a certain rule. Following is an illustration of an input line of words and various steps of rearrangement.
Input: gone are take enough brought station
Step 1: take gone are enough brought station
Step 2: take are gone enough brought station
Step 3: take are station gone enough brought
Step 4: take are station brought gone enough
And Step 4 is the last step for this input. Now, find out an appropriate step in the following question following the above rule. Question:
Input: car on star quick demand fat
What will be the third step for this input ?

A

star car demand quick on fat

B

star quick car demand on fat

C

star car quick demand on fat

D

none of these

Which process of bioseparation involves the use of partitioning of a solute between two immiscible phases?

A

Extraction

B

Filtration

C

Sedimentation

D

Centrifugation

Assertion (A): When there is an evidence of a linear relationship between two variables, it may not always mean an independent-dependent relationship between the two variables.
Reason (R): The casual relationship between the two variables may not imply a reasonable theoretical relationship between the two.

A

Both (A) and (R) are true and (R) is the correct explanation of (A)

B

Both (A) and (R) are true, but (R) is not the correct explanation of (A)

C

(A) is true, but (R) is false

D

(A) is false, but (R) is true

Which of the following statements about washing are correct? Statement 1: Unwanted materials must be more soluble in the solvent than in the mixture. Statement 2: The solvent and mixture must be immiscible.

A

True, False

B

True, True

C

False, True

D

False, False

Read the following statements and answer with the help of given below:
(1) Two persons are said to be related to each other by full blood when they are descended from a common ancestor by the same wife.
(2) Two persons are said to be related to each other by uterine blood when they are descended from a common ancestress but by different husbands.
(3) Two persons are said to be related to each other by half blood when they are descended from a common ancestor by the same wife.
(4) Two persons are said to be related to each other by half blood when they are descended from a common ancestor but by different wives.

A

(1) and (2) are correct, but (3) and (4) are incorrect.

B

(1), (2) and (4) are correct, but (3) is incorrect.

C

(4) and (2) are correct, but (3) and (1) are incorrect.

D

(2) and (3) are correct, but (1) and (4) are incorrect.

Consider the following statements and choose the correct answer:
1. Transpiration usually occurs during day-time whereas guttation takes place in night
2. In transpiration water comes out in the form of liquid, whereas in guttation the water is given off in the form of vapour
3. Transpiration water is pure but guttation water contains inorganic salts and sugars
4. Transpiration is a controlled phenomenon whereas guttation is an uncontrolled phenomenon

A

Only 1, 2 and 3 are true

B

Only 1, 3 and 4 are true

C

Only 3 and 4 are true

D

1, 2, 3 and 4 are true