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WorksheetsScientific principle Plumbing Materials Quiz part 1
Total questions: 64
Worksheet time: 32mins
Which of the following is a non-ferrous metal commonly used in plumbing materials?
Steel
Iron
Copper
Plastic
Which material is not typically used in plumbing applications?
Steel
Wood
Plastic
Alloys
What type of metal is iron classified as in plumbing materials?
Non-ferrous metal
Ferrous metal
Alloy
Plastic
What are some of the main materials used in plumbing?
Pipes, fittings, boilers, radiators
Wood, plastic, glass, rubber
Concrete, bricks, tiles, sand
Paper, cardboard, fabric, leather
Which of the following is a pure metal gained straight from ore?
Iron
Plastic
Glass
Wood
What characteristic do ferrous metals have?
They are magnetic and will corrode easily if not treated
They are non-magnetic and do not corrode
They are lightweight and flexible
They are transparent and brittle
What metals make up brass, commonly used in the plumbing industry?
Copper and tin
Copper and zinc
Copper, tin, and zinc
Iron and carbon
Which alloy is composed of copper and tin?
Brass
Bronze
Gunmetal
Steel
What is gunmetal made of?
Copper and zinc
Copper and tin
Copper, tin, and zinc
Iron and carbon
Which of the following is a non-ferrous metal?
Steel
Iron
Copper
Carbon
What are some uses of plastics in plumbing?
Only for cold water
Only for central heating
For cold water, hot water, central heating, guttering, above ground drainage, and below ground drainage
Only for above ground drainage
What is a characteristic of thermoplastics?
Cannot be reshaped
Become flexible when frozen
Made from metal
Can be heated and reshaped
What happens to thermoplastics when they are frozen?
They become flexible
They become brittle
They melt
They expand
Are thermoplastics recyclable?
Yes
No
Only some types
Only when mixed with other materials
What is PVCu commonly used for?
Hot water pipes
Cold water pipes
Electrical wiring
Insulation
Which material is not suitable for hot water applications?
HDPE
MDPE
PVCu
Copper
What does MDPE stand for?
Medium density polyethylene
Maximum density polyethylene
Minimum density polyethylene
Multi-density polyethylene
Which type of polyethylene is used for underground mains and is black in color?
PVCu
MDPE
HDPE
LDPE
What is a common characteristic of both MDPE and HDPE?
Suitable for hot water
Degrades in sunlight
Used for electrical wiring
Non-degradable
Which thermoplastic is used for waste pipes and degrades in direct sunlight?
Polybutylene
ABS Acrylonitrile Butadiene Styrene
Polypropylene
PVC
What is a characteristic of Polybutylene in plumbing applications?
Solvent welded
Push fit
Feels slightly greasy
Degrades in sunlight
Which material is solvent welded and degrades in sunlight?
Polypropylene
Polybutylene
ABS Acrylonitrile Butadiene Styrene
PVC
What are thermosetting plastics?
Plastics that can be recycled
Rigid plastics that can cope with high temperatures but are not recyclable
Flexible plastics that melt at high temperatures
Plastics that are used for insulation
Which of the following is an example of a thermosetting plastic?
Polyethylene
Polypropylene
Formica
Nylon
What is the definition of "Mass"?
The amount of space an object occupies
The amount of matter in an object
The force exerted by gravity on an object
The energy required to raise the temperature of a substance
What does "Weight" refer to?
The amount of matter in an object
The force exerted by gravity on an object
The volume of an object
The density of a material
How is "Gravity" best defined?
The force that attracts a body toward the center of the earth
The amount of matter in an object
The energy required to change the state of a substance
The resistance of an object to a change in its state of motion
What is "Density"?
The amount of matter in an object
The mass per unit volume of a substance
The force exerted by gravity on an object
The energy required to raise the temperature of a substance
What does "Relative density" mean?
The ratio of the density of a substance to the density of a reference substance
The amount of matter in an object
The force exerted by gravity on an object
The energy required to change the state of a substance
What is "Specific heat capacity"?
The amount of matter in an object
The energy required to raise the temperature of a unit mass of a substance by one degree Celsius
The force exerted by gravity on an object
The mass per unit volume of a substance
What does "Coefficient of linear expansion" refer to?
The ratio of the density of a substance to the density of a reference substance
The change in length per unit length of a material for a one degree Celsius change in temperature
The energy required to raise the temperature of a unit mass of a substance by one degree Celsius
The amount of matter in an object
What is mass measured in?
Newtons
Pounds
Kilograms
Liters
What is the force of gravity pulling on a mass called?
Mass
Weight
Volume
Density
How is weight calculated?
weight = mass + gravity
weight = mass / gravity
weight = mass x gravity
weight = mass - gravity
What happens to your weight if you go to the moon?
It increases
It stays the same
It decreases
It doubles
What is gravity?
A force of attraction between masses
A type of plumbing material
A chemical reaction
A form of energy
How does the mass of an object affect gravity?
The bigger the mass, the smaller the gravity
The bigger the mass, the bigger the gravity
Mass does not affect gravity
Gravity is inversely proportional to mass
What is the value of gravity on Earth?
1.6N
9.81N
5.5N
12.3N
What is the value of gravity on the moon?
9.81N
3.7N
1.6N
0.98N
What is the formula to calculate the density of an object?
density = volume / mass
density = mass / volume
density = mass x volume
density = volume - mass
Why can solid materials of the same size and shape have different weights?
Because they have different colors
Because their molecules are more tightly packed together
Because they are made of different elements
Because they have different temperatures
What is an example of a good conductor of heat mentioned in the text?
Wood
Plastic
Copper
Glass
Which type of heat exchanger is used for a 'Dry to wet' application?
Radiator
Boiler
Warm air unit
DHWC
What does 'Wet to dry' refer to in the context of heat exchangers?
Boiler
DHWC
Radiator
Warm air unit
Which material is not a good conductor of heat according to the text?
Copper
Aluminum
Wood
Steel
What is relative density?
A measure of the volume of a material
A comparison of the mass of a material
A measure of the temperature of a material
A comparison of the color of a material
What happens to a solid or liquid with a density greater than 1 in water?
It will float
It will dissolve
It will sink
It will evaporate
What happens to a gas with a density less than 1 in air?
It will sink
It will rise
It will remain stationary
It will condense
Which material has a relative density of 0.90 and floats in water?
Aluminium
Polythene
uPVC
Copper
What is the relative density of uPVC?
0.90
1.00
1.28
2.70
Which material will rise in air due to its relative density?
Natural gas
Propane
Butane
Aluminium
Which of the following materials will sink in water?
Polythene
Natural gas
Aluminium
Air
What is the relative density of copper?
2.70
7.90
8.90
1.28
What determines the properties of a solid material?
The color of the material
The arrangement and behavior of its molecules
The weight of the material
The age of the material
Which of the following is NOT a property of plumbing materials?
Strength
Hardness
Color
Malleability
What property of a material refers to its ability to be stretched into a wire?
Elasticity
Ductility
Hardness
Durability
Which property describes a material's ability to return to its original shape after deformation?
Elasticity
Conductivity
Thermal expansion
Malleability
What is tensile strength?
The ability of a material to conduct electricity
The ability of a material to resist heat
How strong a material is when stretched or pulled
The ability of a material to absorb water
In what units is tensile strength measured?
Kilograms
Newtons per square meter or pascals
Liters
Joules
What does compressive strength measure in plumbing materials?
The ability of a material to withstand being stretched
The ability of a material to withstand being crushed
The ability of a material to conduct electricity
The ability of a material to resist heat
What is shear strength in the context of plumbing materials?
The ability of a material to withstand tension.
The ability of a material to conduct electricity.
The ability of a material to resist opposing forces.
The ability of a material to absorb water.
Which of the following is an example of shear strength?
Stretching a rubber band.
Cutting with scissors.
Heating a metal rod.
Freezing water.
What property of a material is described by its ability to be pulled, pushed, or stretched without breaking?
Ductility
Conductivity
Hardness
Elasticity
Which material is mentioned as being very ductile in the text?
Copper
Steel
Aluminum
Plastic
