ABSA B1 STUDY BANK QUESTIONS
. Dealkalization processes reduce ________, principally carbonate and bicarbonate anions.
a. salts
b. carbonic
c. magnesium
d. alkalinity - ANSWERS-d
1. The weak acid cation dealkalizer uses cation exchange resin that is _________ with either
hydrochloric or sulphuric acid, leaving hydrogen ions on the exchange sites.
a. exchanged
b. replaced
c. regenerated
d. flushed - ANSWERS-c
2. The _______ process, and the associated chemical reactions of a weak acid cation dealkalizer, is
similar to a hydrogen zeolite softener.
a. exchanging
b. replacement
c. regeneration
d. flushing - ANSWERS-c
3. The water coming out of the weak acid cation dealkalizer contains the residual (non-exchanged)
hardness ions and carbon dioxide. This carbon dioxide, due to its potential to cause corrosion problems
on the piping systems and downstream equipment, is degasified.
a. True
,b. False - ANSWERS-a
4. In water treatment, demineralization refers to the removal of all mineral salts, using ______
exchangers.
a. chemical
b. ion
c. composition
d. size - ANSWERS-b
5. All demineralization systems consist of a minimum of one cation exchange process and one anion
exchange process.
a. True
b. False - ANSWERS-a
6. Strong ______ exchangers are required for silica removal.
a. cation
b. anion
c. acid
d. caustic - ANSWERS-b
7. If allowed to remain in the water, _______ acid will break down into carbon dioxide, which causes
corrosion.
a. sulphuric
b. hydrochloric
c. carbonic
d. silicic - ANSWERS-c
,8. Each ion exchanger, in a demineralization system, must be regenerated when its _____ becomes
exhausted.
a. chemical
b. ion
c. composition
d. resin - ANSWERS-d
9. The mixed bed exchanger is a mixture of strong acid cation and strong base anion _____.
a. chemical
b. ion
c. composition
d. resin - ANSWERS-d
10. When a mixed-bed ion exchange softener is exhausted and backwashed the anion resin will: a.
Separate and drop to the bottom
b. Separate and rise to the top
c. Mix uniformly throughout the bed
d. Remain unchanged in the vessel
e. Change to cation resin in the vessel - ANSWERS-b
12. Reverse osmosis can achieve a __ % removal of dissolved salts, in water.
a. 100
b. 55
c. 99
d. 80 - ANSWERS-c
, 13. In a ______ type deaerator, the entering water passes through spray nozzles, which divide it into a
fine state.
a. spray - ANSWERS-a
14. The spring-loaded valve maintains even distribution of water spray through a ____ range of flow
variation.
a. narrow
b. wide
c. large
d. small - ANSWERS-b
15. In a _____ deaerator, the water flow is broken up by trickling down over a series of trays.
a. spray
b. tray
c. bubbler
d. combination - ANSWERS-b
16. In a _______ deaerator, steam is forced up through perforated panels as the water flows along the
top surface of the panel.
a. spray
b. tray
c. bubbler
d. combination - ANSWERS-c
17. In periods of low flow, steam may condense and the level will creep up. In this case, an __________
valve will open to prevent the water from rising above the level where proper deaeration can occur.
a. level
. Dealkalization processes reduce ________, principally carbonate and bicarbonate anions.
a. salts
b. carbonic
c. magnesium
d. alkalinity - ANSWERS-d
1. The weak acid cation dealkalizer uses cation exchange resin that is _________ with either
hydrochloric or sulphuric acid, leaving hydrogen ions on the exchange sites.
a. exchanged
b. replaced
c. regenerated
d. flushed - ANSWERS-c
2. The _______ process, and the associated chemical reactions of a weak acid cation dealkalizer, is
similar to a hydrogen zeolite softener.
a. exchanging
b. replacement
c. regeneration
d. flushing - ANSWERS-c
3. The water coming out of the weak acid cation dealkalizer contains the residual (non-exchanged)
hardness ions and carbon dioxide. This carbon dioxide, due to its potential to cause corrosion problems
on the piping systems and downstream equipment, is degasified.
a. True
,b. False - ANSWERS-a
4. In water treatment, demineralization refers to the removal of all mineral salts, using ______
exchangers.
a. chemical
b. ion
c. composition
d. size - ANSWERS-b
5. All demineralization systems consist of a minimum of one cation exchange process and one anion
exchange process.
a. True
b. False - ANSWERS-a
6. Strong ______ exchangers are required for silica removal.
a. cation
b. anion
c. acid
d. caustic - ANSWERS-b
7. If allowed to remain in the water, _______ acid will break down into carbon dioxide, which causes
corrosion.
a. sulphuric
b. hydrochloric
c. carbonic
d. silicic - ANSWERS-c
,8. Each ion exchanger, in a demineralization system, must be regenerated when its _____ becomes
exhausted.
a. chemical
b. ion
c. composition
d. resin - ANSWERS-d
9. The mixed bed exchanger is a mixture of strong acid cation and strong base anion _____.
a. chemical
b. ion
c. composition
d. resin - ANSWERS-d
10. When a mixed-bed ion exchange softener is exhausted and backwashed the anion resin will: a.
Separate and drop to the bottom
b. Separate and rise to the top
c. Mix uniformly throughout the bed
d. Remain unchanged in the vessel
e. Change to cation resin in the vessel - ANSWERS-b
12. Reverse osmosis can achieve a __ % removal of dissolved salts, in water.
a. 100
b. 55
c. 99
d. 80 - ANSWERS-c
, 13. In a ______ type deaerator, the entering water passes through spray nozzles, which divide it into a
fine state.
a. spray - ANSWERS-a
14. The spring-loaded valve maintains even distribution of water spray through a ____ range of flow
variation.
a. narrow
b. wide
c. large
d. small - ANSWERS-b
15. In a _____ deaerator, the water flow is broken up by trickling down over a series of trays.
a. spray
b. tray
c. bubbler
d. combination - ANSWERS-b
16. In a _______ deaerator, steam is forced up through perforated panels as the water flows along the
top surface of the panel.
a. spray
b. tray
c. bubbler
d. combination - ANSWERS-c
17. In periods of low flow, steam may condense and the level will creep up. In this case, an __________
valve will open to prevent the water from rising above the level where proper deaeration can occur.
a. level
