Waste Water Engineering Mock Test 8

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Question 1 of 10

1. Where did the research on reverse osmosis begin?

University of Florida

University of Bangalore

University of Columbia

University of California

Question 1 of 10

Question 2 of 10

2. How can biofilm formation be prevented?

By installing a nanofilter prior to Reverse Osmosis

By installing a microfilter prior to Reverse Osmosis

By installing a ultrafilter prior to Reverse Osmosis

By installing a pressure sand filter prior to Reverse Osmosis

Question 2 of 10

Question 3 of 10

3. Water softener units work most efficiently with particulate water.

False

True

Question 3 of 10

Question 4 of 10

4. What is the retention time considered for a UASB while designing at 16-19 degree Celsius?

10-14 h

3-5 h

22 h

18 h

Question 4 of 10

Question 5 of 10

5. What is the material used in the making of NS-200 membrane?

Sulphonated polyfuran

Sulphonated polysulphone

Aromatic polyamide

Polypiperazine-amide

Question 5 of 10

Question 6 of 10

6. What is the SDI assumed for reverse osmosis hollow fibre?

8-10

6-8

0-3

4-6

Question 6 of 10

Question 7 of 10

7. The formation of the alkaline scale is a function of the operational temperature.

False

True

Question 7 of 10

Question 8 of 10

8. Membrane permeation rate increases proportionally to effective pressure.

True

False

Question 8 of 10

Question 9 of 10

9. What is the flux considered while designing a reverse osmosis system for treating surface water?

22-30 LMH

15-22 LMH

30-35 LMH

12-15 LMH

Question 9 of 10

Question 10 of 10

10. While designing the demineralisation plant what is considered as the weak basic anion load?

Alkaline hardness

Alkaline hardness + EMA

Silica

EMA

Question 10 of 10