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WorksheetsGMJ 9189 Phase 2 Scientific MCQ
Total questions: 20
Worksheet time: 10mins
What charge does a proton carry?
Positive charge
Negative charge
Alternating positive to negative charge
Neutral charge
When a liquid changes state into a gas, it is known as…
Evaporation
Condensing
Sublimination
Expansion
When a gas changes state into a liquid, it is known as…
Evaporation
Condensing
Sublimination
Expansion
To determine the current within a circuit, which calculation is used?
Watts/Volts
Watts/Ohms
Volts/Watts
Ohms/Volts
What does the symbol ∆t represent?
Difference in temperature
Direct temperature
Difference in pressure
Direct pressure
What is the SI unit for force?
Pascal
Newton
Joule
Bar
A system of pipework has a static head of 11.6m. What is the pressure acting upon the lowest part of the system?
11.6 bar
11.6 pascals
116,000 pascals
10.6 bar
How can pressure be defined?
Force divided by area
Area divided by force
Force multiplied by area
Volume multiplied by force
What is the specific heat capacity for water under atmospheric conditions?
1kj/kg/⁰C
3.14kj/kg/⁰C
4.18kj/kg/⁰C
9.18kj/kg/⁰C
What term does the following sentence describe? The energy used to change the state of a substance which is released during evaporation.
Sensible heat
Total heat
Latent heat
Specific heat
What temperature is 373K in the Celsius scale?
173⁰C
100⁰C
-173⁰C
-200⁰C
How is current correctly defined?
The number of electrons flowing per second
The number of neutrons flowing per second
The difference in electron concentration
The potential difference within a circuit
What is atmospheric pressure at sea level?
0 bar
1.01 bar
10.1 bar
100 bar
Select the correct equation to calculate the linear expansion within a 10m length of copper pipe if it was heated by 30⁰C.
3.14 x 10 x 30
10 x 30 x 0.000016
30 / 10 x (0.000011)
4.18 x 30 x 10
At what temperature would water boil if subjected to 3 bar of pressure?
100⁰C
110⁰C
123⁰C
143⁰C
Which of the following materials expands the most?
Copper
Steel
Brass
PVC plastic
Which of the following equations describes a Joule?
1kJ/s
1W/s
1Nm
1W/m
Which of the following examples of pipe installation would result in the best flow rate?
3m of 22mm pipework with five elbows
3m of 15mm pipework with five elbows
3m of 22mm pipework with five pulled bends
3m of 15mm pipework with five pulled bends
An electrical immersion heater is required to provide 36,000kJ of heat energy to heat a cylinder. What is the power of the immersion heater if it raises the temperature of the water to its design temperature within one hour?
10 watts
10Kw
100 watts
100kW
What is the correct calculation to determine the volume of a cylinder?
3.14 x radius2 x height
3.14 x diameter x height
Diameter / height x (3.14)2
3.14 x diameter2
