In the phosphate test, what reagent is used?

In the phosphate test, what reagent is used?

A. Molybdate
B. Stannous
C. Potassium-iodide-iodate
D. A and C
E. A and B





Answer: E

In the sodium sulphite test, ___ is added drop by drop until a permanent light blue color is attained.

In the sodium sulphite test, ___ is added drop by drop until a permanent light blue color is attained.

A. Starch
B. Potassium-iodide-iodate
C. Molybdate reagent
D. Hydroxides
E. Bicarbonates






Answer: B

Which test uses a device with two electrodes that are immersed in the sample and a voltage is supplied to the electrodes by a means of a battery.

Which test uses a device with two electrodes that are immersed in the sample and a voltage is supplied to the electrodes by a means of a battery.

A. Methyl orange test
B. pH testing
C. Sodium sulphite test
D. Phosphate test
E. Dissolved solid test





Answer: B

Which test measures the ability of the water to conduct an electric current?

Which test measures the ability of the water to conduct an electric current?

A. Methyl orange test
B. pH testing
C. Sodium sulphite test
D. Phosphate test
E. Dissolved solid test





Answer: E

In the methyl orange test, if a yellow color is produced then this means that the sample is still alkaline due to __ present.

In the methyl orange test, if a yellow color is produced then this means that the sample is still alkaline due to __ present.

A. Bicarbonates
B. Hydroxides
C. Sulphuric acid
D. Phosphates
E. Sodium carbonate





Answer: A

In the phenolphthalein test __ is added drop by drop to the water until the pink color disappears.

In the phenolphthalein test __ is added drop by drop to the water until the pink color disappears.

A. Bicarbonates
B. Hydroxides
C. Sulphuric acid
D. Phosphates
E. Sodium carbonate






Answer: C

The titration test has an accuracy of 10% if the ppm is lower than __ppm.

The titration test has an accuracy of 10% if the ppm is lower than __ppm.

A. 10
B. 5
C. 15
D. 17
E. 8






Answer: B

The titration test has an accuracy of 2% if the ppm is between __ppm to __ppm.

The titration test has an accuracy of 2% if the ppm is between __ppm to __ppm.

A. 2 to 1000
B. 3 to 1100
C. 4 to 1300
D. 5 to 1200
E. 6 to 1500






Answer: D

Sample line is connected to?

Sample line is connected to?

A. Boiler drum
B. Feedwater line
C. Continuous blowdown line
D. Chemical line
E. Blowdown tank

Answer: C

Sample water passes through a cooler where its temperature is reduced to about __C.

Sample water passes through a cooler where its temperature is reduced to about __C.

A. 32
B. 24
C. 15
D. 9
E. 28




Answer: B

Corrosion of return lines is caused by?

Corrosion of return lines is caused by?

A. Sodium hydroxide and sodium carbonate
B. Sodium phosphate and Sodium sulphite
C. Bicarbonates and phosphates
D. Oxygen and carbon dioxide
E. All of the above

Answer: D

Chemical that prevent caustic embrittlement is?

Chemical that prevent caustic embrittlement is?

A. Sodium nitrate
B. Lignins
C. Tannins
D. All of the above




Answer: D

Disadvantage of sodium hydroxide is?

Disadvantage of sodium hydroxide is?

A. Causes caustic embrittlement of the boiler metal
B. Causes forming
C. Poor for pH control
D. All of the above
E. A and C





Answer: A

Hydrazine chemical formula?

Hydrazine chemical formula?

A. NH2
B. N2H3
C. N2H4
D. N3H3
E. N4H4







Answer: C

Chemicals used for scale prevention are?

Chemicals used for scale prevention are?

A. Tannin
B. Sodium aluminate
C. Lignin
D. All of the above
E. A and C






Answer: B

Chemicals used for sludge conditioning are?

Chemicals used for sludge conditioning are?

A. Sodium carbonate
B. Sodium hydroxide
C. Alginates
D. All of the above
E. A and B






Answer: C

Chemicals are sold by:

Chemicals are sold by:

A. Generic names
B. Trade names
C. Numbers
D. All of the above
E. B and C

Answer: E

Caustic acid is?

Caustic acid is?

A. Sodium hydroxide
B. Sodium sulphite
C. Sodium chromate
D. Sodium carbonate
E. Sodium phosphate





Answer: A

Soda ash is?

Soda ash is?

A. Sodium hydroxide
B. Sodium sulphite
C. Sodium chromate
D. Sodium carbonate
E. Sodium phosphate





Answer: D

Low pressure hot water boilers require:

Low pressure hot water boilers require:

A. Proper pH control
B. Extensive internal water treatment
C. Corrosion prevention
D. All of the above
E. A and C

Answer: E