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Pre-Test: Water Treatment System

Total questions: 16

Worksheet time: 8mins

Name
Class
Date
1.

Which among the following is used for the coagulation of suspended solids?

a)

Hydrochloric Acid

b)

Sodium Bisulfite

c)

Ferric Chloride

d)

Sodium Hypochlorite

2.

Which among the following is the commercial name for liquid Sodium Hypochlorite (NaOCl)?

a)

Chlorox

b)

Muriatic Acid

c)

Liquid Sosa

d)

Baking Soda

3.

What is the purpose of DMF (Dual Media Filter)?

a)

To remove the oxygen in water

b)

To gather fine and light solids to forming larger particles called flocs

c)

Both a and b

d)

To filter out suspended solids

4.

Desalination is a process which

a)

Sucks up marine creatures

b)

Adds more salt to water

c)

Removes salt from water

d)

Removes suspended solids from water

5.

What is used to neutralize the natural acidity of product water and give the desired pH for industrial water use.

a)

HCl

b)

NaOH

c)

NaOCl

d)

NaHSO3

6.

Process of forcing a solvent from a region of high concentration through a semi-permeable membrane to a region of low concentration by applying a pressure in excess of osmotic pressure.

a)

Reverse Osmosis

b)

Normal Osmosis

c)

Osmotic Pressure

d)

Osmosis

7.

What unit that uses a physico-chemical settling process combining the advantages of microsand ballasted flocculation and lamella settling?

a)

Actisand

b)

DMF

c)

Actiflo

d)

MMF

8.

What is the process when water flows from low concentration of salts to high concentration?

a)

Reverse Osmosis

b)

Osmosis

c)

Filtration

d)

Coagulation

9.

What is the product water of BWRO called?

a)

Demineralized Water

b)

Industrial Water

c)

Potable Water

d)

Condensate Water

10.

Filters the seawater from suspended solids and removes undesirable odors and colors using dual media (sand and anthracite).

a)

Semi-Auto Filtration System

b)

Dual Media Filter

c)

Sand Filter

d)

Multi-Media Filter

11.

Cationic resins remove

a)

Positive ions

b)

Negative ions

c)

Salt

d)

Suspended solids

12.

How much is the allowable degree rise in the condenser cooling water—between the intake and discharge canal?

a)

<3 degree C

b)

<4 degree C

c)

<5 degree C

d)

<6 degree C

13.

A substance that minimizes changes in pH is called?

a)

Acid

b)

Base

c)

Buffer

d)

Anti-scalant

14.

Which among the following is an indication of a condenser tube leak?

a)

Increase in feedwater cationic conductivity

b)

Increase in feedwater specific conductivity

c)

Increase in feedwater Chloride content

d)

All of the above

15.

Pure water is

a)

Good insulator

b)

Appears in 3 phases

c)

Universal Solvent

d)

All of the above

16.

Low feedwater pH will promote

a)

Acid corrosion

b)

Scale formation

c)

Pitting corrosion

d)

Oxygen corrosion