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WorksheetsPlumbing Science Quiz
Total questions: 82
Worksheet time: 27mins
What is the standard unit of mass commonly used in the mechanical services industry?
m
g
l/s
km
Which unit is used to measure length in the mechanical services industry?
kg
l/s
m
kg/s
What unit would be used to measure volume in the mechanical services industry?
m^2
m^3
mm
km
Which of the following units is used to measure flow rate in the mechanical services industry?
kg
m
l/s
mm
What is the SI base unit for length commonly used in the building services industry?
Kilogram
Second
Metre
Ampere
How is the metre subdivided for smaller units in the construction industry?
Divided by 100 to become centimetres
Divided by 1000 to become millimetres
Multiplied by 100 to become decimetres
Multiplied by 1000 to become kilometres
What does the mass of an object refer to?
The weight in Newtons
The size of the object
The amount of matter an object contains
The volume of the object
What is the base unit of time in the SI system?
Minute
Hour
Second
Day
What is the unit of electrical current in the SI system?
Volt
Watt
Ohm
Ampere
What is the value of absolute 0 on the Kelvin scale?
0°C
-100°C
-273°C
-373°C
What is the SI base unit for pressure commonly used in the Building Services Industry?
Newton
Bar
Pascal
Kilopascal
How many Pascals are there in 1 bar?
10 Pascals
1000 Pascals
10000 Pascals
100000 Pascals
What does 1 bar of pressure equal in terms of water pressure?
1m of water pressure
10m of water pressure
100m of water pressure
1000m of water pressure
What is the SI derived unit for area?
cubic metre
square metre
metre per second
metre per second squared
How is the SI derived unit for volume described?
The distance travelled over time in a straight line at a constant speed.
The distance travelled over time that includes speeding up, slowing down and changing direction.
Derived from multiplying length and width.
Derived from multiplying length, width, and height.
What does the SI derived unit 'metre per second squared' (m/s²) represent?
Area
Volume
Speed, velocity
Acceleration
What is the standard unit of material density in the International System of Units (SI)?
Kilograms per square metre
Kilograms per metre cubed
Litres per metre cubed
Grams per centimetre cubed
How is the square metre (m²) derived?
By multiplying length and height
By multiplying width and height
By multiplying length and width
By multiplying mass and volume
What does the symbol 'l' stand for in the context of capacity?
Litres
Length
Luminosity
Linear metre
How many centimetres cubed (cm³) are there in a litre?
100 cm³
1000 cm³
10,000 cm³
1 cm³
Which of the following materials is used in the mechanical services industry?
Polyethylene
Sandstone
Silk
Wool
Which material mentioned is not a metal?
Brass
Copper
Ceramics
Stainless Steel
What is the relative density of copper?
1
8.92 g/cm³
8920 kg/m³
1000 kg/m³
What is the reference material for measuring the relative density of solids and liquids?
Air
Copper
Water
Helium
What is the relative density of water?
0.92
1
8.92
1000
What term is used to describe the relative density of a gas to air?
Relative mass
Specific gravity
Air density
Gas weight
If a gas is lighter than air, what would be its specific gravity?
Greater than 1
Equal to 1
Less than 1
Equal to the specific gravity of water
Which of the following gases would likely have a specific gravity greater than 1?
Helium
Natural gas
Hydrogen
Propane
What is the specific gravity of Hydrogen?
0.5537
0.6218
0.138
0.05696
Which of the following materials has a relative density greater than water?
Ice (0°C, 32°F)
Polyethylene, MD
Steel, carbon
ABS, extrusion grade
What is the relative density of Copper?
1.05
8.89
7.13
0.97
Which gas has a specific gravity closest to that of air?
Methane - CH₄
Oxygen - O₂
Water vapour
Helium - He
What is the relative density of water used as a reference for measuring the relative density of solids and liquids?
0.92
1.0
7.31
1.05
How many different groups can metals be divided into according to their properties in the plumbing industry?
2
3
4
5
What type of metal is iron classified as?
Pure metal
Alloy
Ferrous metal
Non-ferrous metal
Which process is usually used to purify copper?
Smelting
Electrolysis
Refining
Filtration
What group of metals does copper belong to?
Iron, Silver, and Gold group
Gold, Silver, and Copper group
Platinum, Silver, and Copper group
Aluminum, Silver, and Copper group
What is Aluminium ore better known as?
Galena
Bauxite
Brass
Bronze
Which metal is the most abundant on earth?
Lead
Zinc
Aluminium
Tin
What is the primary use of Zinc mentioned in the text?
As an anti-corrosion coating on galvanised pipe
To make bronze when blended with tin
As a cheaper alternative to aluminium
For extraction of silver
What is an alloy?
A pure metal element
A blend of two or more non-metal elements
A blend of two or more elements, one of which must be a metal
A natural mineral found in the earth
What is the characteristic of Lead when it is freshly cut?
It is bluish-white and tarnishes to a dull grey when exposed to air
It is shiny and remains so when exposed to air
It is dull grey and polishes to a bluish-white when exposed to air
It is silver in color and does not tarnish
What alloy is formed when tin is blended with copper?
Aluminium
Bauxite
Brass
Bronze
What is brass primarily used for in the plumbing industry?
For the bodies of hot water secondary return pumps
For fittings and components
For corrosion protection in all plumbing systems
For making ferrous oxide coatings
Why is low-zinc-content brass used in plumbing?
Because it is cheaper than other materials
To resist the formation of rust
To make it dezincification resistant
To improve its appearance
What distinguishes ferrous metals from non-ferrous metals?
Ferrous metals contain iron and do not rust
Non-ferrous metals contain iron and do not rust
Ferrous metals contain iron and can rust
Non-ferrous metals rust more easily than ferrous metals
Which of the following is not a characteristic of non-ferrous metals?
They contain iron
They do not rust
They can corrode over time
They include copper and aluminium
What are the two categories of plastics mentioned?
Polyethylene and Polypropylene
Thermoplastics and Thermo-setting plastics
PVC and ABS
Flexible and Rigid plastics
What characteristic of thermoplastics allows them to be recycled?
They become liquid when heated and can be remoulded.
They cannot be reheated or remoulded.
Their initial shape is permanent.
They melt when heated.
Which type of plastic is used extensively for cold water mains and cold water installations?
Polyethylene
Polypropylene
Unplasticised Polyvinyl Chloride (uPVC)
Acrylonitrile butadiene styrene (ABS)
What is High Density Polyethylene (HDPE) used for?
Underground gas pipes
Central heating installations
Underground cold water mains (coloured black)
Solvent welded waste and overflow pipes
Which type of plastic is used for push-fit hot and cold water installations?
Polyethylene
Polybutylene
Polypropylene
Acrylonitrile butadiene styrene (ABS)
What is the main difference between thermosetting plastics and thermoplastics?
Thermosetting plastics can be reheated and remoulded.
Thermoplastics can only be heated and moulded once.
Thermosetting plastics cannot be reheated and remoulded.
Thermoplastics are used for electrical switches and sockets.
What is Vitreous China used to manufacture in the plumbing industry?
Tubes and fittings
Belfast sinks and cleaners
Bathroom appliances such as W.C.s and cisterns
Compression fittings and boiler components
Fireclay is used for making heavy-duty appliances due to its:
Low cost
High temperature resistance
Enamelled surface
Application in bathrooms and kitchens
Which material is used in its molten state for galvanising for galvanised low carbon steel tubes and fittings?
Copper
Bronze
Zinc
Stainless steel
What are ceramic tiles extensively used for?
Heavy-duty appliances
Bathroom appliances
Bathrooms, kitchens, floors, and swimming pools
Compression fittings and boiler components
Stainless steel is used in the plumbing industry for:
Vandal proof sanitary ware, kitchen sinks, and hot water cylinders
Heat exchangers and secondary circulation pumps
Galvanising for galvanised low carbon steel tubes and fittings
Bathroom appliances such as W.C.s and cisterns
What type of Polyethylene is used for underground cold water mains and is coloured blue?
HDPE
MDPE
LDPE
PVC
Which material is used for push-fit waste and overflow pipe, as well as cold water storage cisterns?
Polyethylene
Polypropylene
Polystyrene
ABS
ABS is an acronym for which of the following materials?
Acrylonitrile butadiene styrene
Acrylic butadiene styrene
Acrylonitrile butyl styrene
Acrylonitrile benzene styrene
What is the common use for Vitreous China in plumbing?
Water supply pipes
Sanitary appliances such as WCs, Wash basins, bidets
Central heating installations
Underground gas pipes
Fireclay is typically used for which of the following?
Baths and shower trays
Heavy-duty sinks, Belfast sinks, London sinks, cleaners sinks and butlers sinks
Cold water installations
Solvent welded waste and overflow pipes
What is the definition of hardness in materials?
The amount of energy a material can absorb without breaking or fracturing.
The maximum force a material can withstand when being pulled apart.
The resistance of material to being cut, deformed or bent.
The measure of how well a material conducts heat or electricity.
What property describes the maximum force a material can withstand when being twisted?
Compressive strength
Shear strength
Torsion strength
Elasticity
Which property is particularly desirable in metals such as sheet lead due to its ability to withstand hammering and shaping without breaking?
Malleability
Ductility
Toughness
Heaviness
What does ductility refer to in the context of material properties?
The length a material can be stretched and return to its original length when released.
The measure of how materials withstand heavy loads without breaking.
The amount that a material can be pulled, pushed, stretched or deformed without breaking.
The denseness of a material.
What is the cause of atmospheric corrosion according to the text?
It is caused by a single element in the atmosphere.
It is a permanent chemical reaction that cannot be reversed.
It is caused by the erosion and corrosion situations that do not alter the micro-structure of the material.
It is caused by atmospheric substances that improve the material's strength and useful life.
What is the key factor in corrosion according to the text?
High temperatures
Moisture
Oxygen levels
Salt content
What are the chemical formulas for carbon dioxide and sulphur trioxide, respectively?
CO and SO2
CO2 and SO3
CO2 and SO4
C2O and S3O
When water reacts with carbon dioxide, what compound is formed?
Sulphuric acid
Carbonic acid
Hydrochloric acid
Nitric acid
What is the result of the reaction between water and sulphur trioxide?
H2CO3
H2SO3
H2SO4
H2O2
What type of corrosion can salts and chlorine aggravate by creating?
Electrolytic and galvanic corrosion
Oxidative and reductive corrosion
Chemical and physical corrosion
Atmospheric and underground corrosion
What percentage of oxygen does the Earth's natural environment contain?
10%
20%
30%
40%
What is the common name for ferrous oxide?
Rust
Patina
Scale
Verdigris
What is the protective coating called that forms on copper to prevent further corrosion?
Rust
Patina
Scale
Verdigris
What is the green colour that forms on a copper roof called, and what is its purpose?
Rust, to weaken the copper
Patina, to protect the copper underneath
Mold, to indicate water damage
Verdigris, to enhance aesthetic appeal
What is the effect of rust (ferrous oxide) on an old galvanised steel cold water storage cistern?
It causes the cistern to expand and eventually burst.
It leads to discoloration but does not affect the integrity of the cistern.
It will penetrate all the way through the metal and the cistern will leak.
It increases the strength of the cistern over time.
What is the Electrode Potential of Copper as shown in the electro-motive series of metals?
a) +0.34 Volts
b) -0.34 Volts
c) +1.50 Volts
d) -1.67 Volts
Which of the following is often confused with galvanic corrosion but has a subtle but significant difference?
a) The electro-motive series of metals
b) Electrolytic corrosion
c) Erosion corrosion
d) Pitting corrosion
According to the electro-motive series of metals, which metal is the most noble (cathodic)?
a) Gold
b) Silver
c) Copper
d) Magnesium
Which metal is the least noble (anodic) according to the electro-motive series of metals provided in the image?
a) Gold
b) Silver
c) Copper
d) Magnesium
