Mass Transfer Mock Test 8

10%

Question 1 of 10

1. The system becomes solutropic if the tie line inside the binodal solubility curves becomes_________

None of the mentioned

Straight

Vertical

Horizontal

Question 1 of 10

Question 2 of 10

2. Find the period if the initial and the final moisture content are 50% and 20%. Also the critical moisture content is 30%.

Constant rate period

Falling rate period

saturated period

None of the mentioned

Question 2 of 10

Question 3 of 10

3. The two liquids while mixing gets dispersed inside the mixer.

True

False

Question 3 of 10

Question 4 of 10

4. Differential contractors are continuous extractor.

False

True

Question 4 of 10

Question 5 of 10

5. After critical moisture content _________ starts.

Constant drying region

Saturated drying region

None of the mentioned

Unsaturated drying region

Question 5 of 10

Question 6 of 10

6. Find the time taken to dry 50% to 40% of moisture (dry basis) if critical moisture content is 30%. If the weight of the wet solid is 5 kg and the product of area and the constant rate is 0.5 kg/min.

40 sec

80 sec

20 sec

60 sec

Question 6 of 10

Question 7 of 10

7. Cabinet/ Tray driers are direct driers.

True

False

Question 7 of 10

Question 8 of 10

8. Find the change in moisture content from the given data
Given data:
Time for drying= 6 sec
Area * Constant rate = 8 kg per sec
Weight of wet solid = 100 kg

0.84

0.12

0.48

0.21

Question 8 of 10

Question 9 of 10

9. For a batch drying, the wet surface should be more compare to dry surface.

True

False

Question 9 of 10

Question 10 of 10

10. Justify that X represents heterogeneity of the solution.

False

True

Question 10 of 10