6036SCPPT1Q4

6036SCPPT1Q4

12th Grade

11 Qs

quiz-placeholder

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6036SCPPT1Q4

6036SCPPT1Q4

Assessment

Quiz

Chemistry

12th Grade

Hard

Created by

William Heron

FREE Resource

11 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is dezincification in plumbing materials?

Leaching of aluminum from brass components

Leaching of iron from steel components

Leaching of zinc from brass components

Leaching of copper from brass components

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the cause of electrolytic corrosion in a plumbing system?

Exposure to UV light

High flow rate of water or gas

Presence of flux in the pipes

Contact between different metals in the presence of an electrolyte

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What metal is used as a sacrificial anode in a hot water cylinder to prevent electrolytic corrosion?

Copper

Aluminum

Magnesium

Iron

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of corrosion can occur on the inside of a copper tube if flux is not cleaned off during commissioning?

Enamelling corrosion

Blue water corrosion

Erosion corrosion

Pitting corrosion

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What can increase erosion in hot and cold water pipework?

Low flow rate

High flow rate

Presence of oxygen

Exposure to sunlight

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What can cause blue water corrosion in a new plumbing system?

Exposure to UV light

Presence of flux in the pipes

High flow rate of water

Standing dormant for a period while filled with water

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What can degrade plastics in a plumbing system?

Light, chemicals, and standing dormant

Heat, UV, oxygen, light and chemicals

Heat, oxygen, and light

UV, oxygen, and chemicals

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