CM 2112 Final Exam(self-assessment)
Questions and Already Passed
Answers 2025-2026 Updated.
(Piping) Gasket is a mechanical seal which fills the space between two "less-than-perfect"
mating surfaces by filling irregularities, generally to prevent leakage from or into the joined
objects, often made from rubber or plastic.
a. True
b. False - Answer True
Any increase in temperature will affect the strength of the materials. The strength of carbon
steels will begin to decrease at ....... and will become critical in the range of ......
Answer
a. 650 deg F - 950 deg F to 1,000 deg F.
b. 600 deg F - 900 deg F to 1,000 deg F.
c. 800 deg F - 900 deg F to 1,000 deg F.
d. 1000 deg F - 950 deg F to 1,100 deg F. - Answer 650 deg F - 950 deg F to 1,000 deg F
Bonding is connecting an object to the earth with a copper wire, which provides an alternate
path for the electricity to flow
Answer
a. True
b. False - Answer False
Cast iron piping and fittings are commonly used in handling non-flammable fluids because it
becomes brittle when exposed to fire and then sprayed with water.
a. True
b. False - Answer True
Fire and explosion in a chemical plant can be prevented by ..... and ......
Question 5Answer
, Jacketed, Gutted, and Traced piping are widely used to maintain the temperature (hot fluid) of
the material that is being transferred. In Jacketed piping, the material will be transferred
through the inner pipe and the heating medium will be injected into the outer piping.
Question 6Answer
a. True
b. False - Answer True
Sacrificial anode is highly active metals used to prevent a less active material surface from
corroding, created from a metal alloy with a more negative electrochemical potential than the
other metal it will be used to protect (e.g., zinc, magnesium, or aluminum alloys).
Question 7Answer
a. True
b. False - Answer True
The followings are common types of flanges for piping:
Answer
a. Angle flanges - Steel flanges - Ring joint flanges
b. Flat face flanges - Raised face flanges - Ring joint flanges
c. Angle flanges - Flexible flanges - Rigid flanges
d. Flat face flanges - Angle flanges - Ring joint flanges - Answer Flat face flanges - Raised face
flanges - Ring joint flanges(B)
The most commonly used piping material is .......
Question 9Answer
a. Aluminum
b. Steel
c. Copper
d. Iron - Answer Steel
Which of the following definitions is NOT correct?
Question 10Answer
a. Pipe water weight: Weight of water that could fit inside one foot of pipe, expressed in pounds
Questions and Already Passed
Answers 2025-2026 Updated.
(Piping) Gasket is a mechanical seal which fills the space between two "less-than-perfect"
mating surfaces by filling irregularities, generally to prevent leakage from or into the joined
objects, often made from rubber or plastic.
a. True
b. False - Answer True
Any increase in temperature will affect the strength of the materials. The strength of carbon
steels will begin to decrease at ....... and will become critical in the range of ......
Answer
a. 650 deg F - 950 deg F to 1,000 deg F.
b. 600 deg F - 900 deg F to 1,000 deg F.
c. 800 deg F - 900 deg F to 1,000 deg F.
d. 1000 deg F - 950 deg F to 1,100 deg F. - Answer 650 deg F - 950 deg F to 1,000 deg F
Bonding is connecting an object to the earth with a copper wire, which provides an alternate
path for the electricity to flow
Answer
a. True
b. False - Answer False
Cast iron piping and fittings are commonly used in handling non-flammable fluids because it
becomes brittle when exposed to fire and then sprayed with water.
a. True
b. False - Answer True
Fire and explosion in a chemical plant can be prevented by ..... and ......
Question 5Answer
, Jacketed, Gutted, and Traced piping are widely used to maintain the temperature (hot fluid) of
the material that is being transferred. In Jacketed piping, the material will be transferred
through the inner pipe and the heating medium will be injected into the outer piping.
Question 6Answer
a. True
b. False - Answer True
Sacrificial anode is highly active metals used to prevent a less active material surface from
corroding, created from a metal alloy with a more negative electrochemical potential than the
other metal it will be used to protect (e.g., zinc, magnesium, or aluminum alloys).
Question 7Answer
a. True
b. False - Answer True
The followings are common types of flanges for piping:
Answer
a. Angle flanges - Steel flanges - Ring joint flanges
b. Flat face flanges - Raised face flanges - Ring joint flanges
c. Angle flanges - Flexible flanges - Rigid flanges
d. Flat face flanges - Angle flanges - Ring joint flanges - Answer Flat face flanges - Raised face
flanges - Ring joint flanges(B)
The most commonly used piping material is .......
Question 9Answer
a. Aluminum
b. Steel
c. Copper
d. Iron - Answer Steel
Which of the following definitions is NOT correct?
Question 10Answer
a. Pipe water weight: Weight of water that could fit inside one foot of pipe, expressed in pounds
