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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<sub>f</sub> = 0.2. The mixture splits into an extract phase E and a raf-finate phase R containing A at x<sub>B</sub> = 0.5 and x<sub>R</sub> = 0.05 respectively. The total mass of the extract phase is (in Kg)
A
6.89
B
8.89
C
10
D
8.25
Correct Answer:
8.89
If Y which is ratio of mass of solvent to mass of solvent in liquid free phase: For extract is 0.5 (YD) For extract leaving stage N is 0.7 (YVN) Amount of extract is 100kg (D) Amount of solvent in cascade is 50 (SD) What is the extract reflux?
A
100
B
150
C
200
D
250
If Y which is ratio of mass of solvent to mass of solvent in liquid free phase: For extract is 0.5 (YD) For extract leaving stage N is 0.7 (YVN) Amount of extract is 200kg (D) Amount of solvent in cascade is 50 (SD) What is the extract reflux?
A
100
B
150
C
200
D
300
If Y which is ratio of mass of solvent to mass of solvent in liquid free phase: For extract is 0.4 (YD) For extract leaving stage N is 0.6 (YVN) Amount of extract is 100kg (D) Amount of solvent in cascade is 40 (SD) What is the extract reflux?
A
100
B
150
C
200
D
250
If Y which is ratio of mass of solvent to mass of solvent in liquid free phase: For extract is 0.3(YD) For extract leaving stage N is 0.7 (YVN) Amount of extract is 100kg (D) Amount of solvent in cascade is 50 (SD) What is the extract reflux?
A
100
B
125
C
200
D
250
If Y which is ratio of mass of solvent to mass of solvent in liquid free phase: For extract is 0.2 (YD) For extract leaving stage N is 0.4 (YVN) Amount of extract is 100kg (D) Amount of solvent in cascade is 50 (SD) What is the extract reflux?
A
100
B
150
C
200
D
250
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.
A
The entire amount of C is transferred to solvent B
B
Less than 2 kg but more than 1 kg of C is transferred to solvent B
C
Less than 1 kg of C is transferred to B
D
No amount of C is tranferred to B
Find the separation factor if the ratio of weight fraction of solute in the extract to raffinate is 0.75. Also given the ratio of dilutant in raffinate to extract is 0.5.
A
1
B
1.25
C
1.5
D
1.75
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.
A
True
B
False
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
Which of the following statements is not true about a splitting rule at internal nodes of the tree based on thresholding the value of a single feature? , where i ∈ is the index of the relevant feature b) It move to the right or left child of the node on the basis of 1, where ϑ ∈ R is the threshold c) Here a decision tree splits the instance space, X = Rd, into cells, where each leaf of the tree corresponds to one cell d) Splits based on thresholding the value of a single feature are also known as multivariate splits
A
It move to the right or left child of the node on the basis of 1, where i ∈ is the index of the relevant feature
B
xi < ϑ
C
xi < ϑ
D
xi < ϑ