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WorksheetsScience prin level 2 mock test Quiz
Total questions: 66
Worksheet time: 33mins
What is the SI base unit for length?
Kilogram
Metre
Second
Ampere
Which symbol represents the unit of mass in the SI system?
m
kg
s
A
What is the base unit of time in the SI system?
Kelvin
Metre
Second
Ampere
What is the unit of electric current in the SI system?
Kelvin
Ampere
Kilogram
Metre
What is the absolute zero temperature in Kelvin?
0 K
-273°C
273 K
100 K
What is the SI unit of pressure?
Bar
Pascal
Newton
Joule
How many pascals are equivalent to 1 bar?
10,000 Pa
100,000 Pa
1,000 Pa
1,000,000 Pa
What is the symbol for the unit of speed or velocity in the SI system?
m/s
m/s²
m³
m²
Which unit is derived from multiplying length, width, and height?
Square metre
Cubic metre
Metre per second
Metre per second squared
What does the unit m/s² represent?
Speed
Area
Acceleration
Volume
What is the standard unit of material density in the International System of Units (SI)?
Gram per centimeter cubed (g/cm³)
Kilogram per meter cubed (kg/m³)
Liter per meter cubed (l/m³)
Meter per second squared (m/s²)
What is the relative density of copper if its density is 8920 kg/m³?
8.92
1.00
0.89
9.82
What is the reference material for measuring the relative density of gases?
Water
Air
Helium
Hydrogen
What is the relative density of water at 4°C?
0.92
1.00
1.10
0.89
What type of metal is iron classified as?
Non-ferrous
Ferrous
Precious
Alloy
What is zinc primarily used for?
Making bronze
galvanising low carbon steel pipes
Electrical wiring
Jewelry
What is an alloy?
A pure metal
A mixture of two or more elements, one of which must be a metal
A non-metallic compound
A single element
Which metal is used in brass?
Iron
Copper
Aluminum
Lead
What is the main characteristic of ferrous metals?
They do not rust
They contain iron
They are non-metallic
They are lightweight
Which type of plastic is used extensively for underground drainage pipes?
Polypropylene
uPVC
Polybutylene
ABS
What is a characteristic of thermoplastics that makes them recyclable?
They are biodegradable.
They can be reheated and remoulded.
They dissolve in water.
They are made from natural fibers.
Which type of polyethylene is used for underground gas pipes?
HDPE
Polypropylene
ABS
Polybutylene
What is Polybutylene primarily used for?
Cold water storage cisterns
Central heating installations
Underground drainage pipes
Solvent welded waste pipes
Which plastic is used for potable water supply in commercial installations?
Polypropylene
MDPE
ABS
uPVC
What is a characteristic of thermosetting plastics?
They can be reheated and remoulded.
They melt when heated.
Their initial shape is permanent.
They are used for disposable items.
Which of the following is a type of ceramic used for heavy-duty appliances?
Vitreous China
Fireclay
Ceramic tiles
Polyester
What is Vitreous China primarily used for?
Manufacturing bathroom appliances
Making kitchen countertops
Producing electrical switches
Creating outdoor furniture
What is tensile strength?
The maximum force a material can withstand when being pulled apart.
The maximum force a material can withstand when being crushed.
The maximum force a material can withstand when being twisted.
The maximum force a material can withstand when being ripped.
What is the definition of malleability?
The ability to be stretched into a wire.
The amount of hammering and shaping a material can withstand without breaking.
The maximum force a material can withstand when being twisted.
The maximum force a material can withstand when being ripped.
Which of the following materials is known for its ductility?
Cast iron
Concrete
Copper
Plastic
What is galvanic corrosion?
Corrosion that occurs when two similar metals are in contact
Corrosion that occurs due to the presence of oxygen
Corrosion that occurs when two dissimilar metals are in contact with each other through the presence of an electrolyte
Corrosion that occurs due to high temperatures
What is produced as a by-product during the process of galvanic corrosion?
Oxygen gas
Hydrogen gas
Carbon dioxide
Nitrogen gas
What is an electrolyte?
A fluid that allows electricity to flow through it
A solid that prevents electricity from flowing
A gas that conducts heat
A metal that resists corrosion
What causes erosion corrosion in pipes and fittings?
Slow-moving fluids
Fast flowing, turbulent fluids and gases
High temperatures
Low pressure
What is pitting corrosion?
A widespread form of corrosion affecting large areas
A localized form of corrosion that takes the form of small cavities and pits in the metal
Corrosion that only affects non-metallic materials
Corrosion that occurs only in the presence of oxygen
What causes photodegradation in plastics?
High temperatures
Natural and fluorescent light
Chemical exposure
Mechanical stress
What is the role of glycol in solar hot water systems?
To increase water pressure
To act as an anti-freeze
To enhance solar absorption
To reduce water hardness
Why is propylene glycol preferred over ethylene glycol in plumbing systems?
It is less expensive
It is more effective
It is less toxic
It is more readily available
What type of fuel is most commonly used in domestic oil boilers and appliances?
Diesel
Gasoline
Kerosene
Natural Gas
What happens to water when it freezes?
It contracts by 10%
It expands by 10%
It expands by 4%
It contracts by 4%
At what temperature does water boil at atmospheric pressure (0 bar)?
69°C
0°C
100°C
50°C
What is the term used to describe water's ability to stick to other surfaces?
Cohesion
Capillarity
Adhesion
Precipitation
What is the pH value of soft water?
Above 7
Below 7
Exactly 7
Neutral
What is the process called when temporary hard water is made soft by boiling?
Filtration
Precipitation
Distillation
Evaporation
What is the effect of temporary hard water on plumbing systems?
Enhances water flow
Causes corrosion
Softens pipes
Increases water pressure
What causes water to become permanently hard?
Passing through Calcium Sulphide or Magnesium Sulphide
Boiling the water
Adding soap to the water
Freezing the water
What is the pH value of permanently hard water?
Less than 7
Exactly 7
More than 7
Neutral
Why does soap not lather well with permanently hard water?
It contains too much salt
It is too acidic
It is an alkali solution
It is too cold
What happens to a balloon when the gas inside is at a higher pressure than the surrounding air?
It contracts
It expands
It remains the same
It bursts immediately
What occurs when the balloon is released?
Air moves from low pressure to high pressure
Air moves from high pressure to low pressure
The balloon deflates slowly
The balloon remains inflated
What is the freezing point of water in Celsius?
0°C
100°C
273°C
-273°C
What is the boiling point of water in Kelvin?
373 K
273 K
100 K
0 K
What is the term for the transition from gas to solid?
Deposition
Sublimation
Condensation
Evaporation
How is temperature in Kelvin calculated from Celsius?
Temperature K = Temperature °C + 273
Temperature K = Temperature °C - 273
Temperature K = Temperature °C × 273
Temperature K = Temperature °C ÷ 273
What is sensible heat?
Heat that causes a change in temperature without a change in state
Heat that causes a change in state without a change in temperature
Heat that is not reversible
Heat that does not affect water temperature
What is latent heat?
Heat that causes a change in temperature without a change in state
Heat that causes a change in state without a change in temperature
Heat that is reversible
Heat that affects water temperature
What is an example of sensible heat?
Water at 100°C to steam at 100°C
Water at 0°C to water at 100°C
Ice melting at 0°C
Steam condensing at 100°C
What is an example of latent heat?
Water at 0°C to water at 100°C
Water at 100°C to steam at 100°C
Ice melting at 0°C
Steam condensing at 100°C
How does conduction occur?
Through radiation
Through convection
Through a substance, passing directly from one molecule to another
Through evaporation
What is the SI unit of work or energy?
Watt (W)
Joule (J)
Pascal (Pa)
Newton (N)
What does the specific heat capacity of a substance indicate?
The amount of energy required to increase the temperature of 1kg of a substance by 1°C
The rate at which an object changes its velocity
The amount of fluid that flows in a given time
The force exerted by the gravitational field of a massive object
Which unit is used to measure pressure?
Newton (N)
Pascal (Pa)
Joule (J)
Watt (W)
What is the unit of velocity?
m/s²
m/s
m³/s
N/m²
What is the static pressure head measured in?
Kilograms
Pascals
Newtons
Liters
How much pressure does 1 meter of head exert?
1 kPa
5 kPa
10 kPa
15 kPa
What is the equivalent of 10 meters of head in bar?
0.1 bar
1 bar
10 bar
100 bar
