Plumbing Maths Quiz for GCSE Students

A pipe has a diameter of 50 mm. Convert this measurement to inches. (1 inch = 25.4 mm)

• 1.97 inches

• 2.54 inches

• 1.50 inches

• 2.00 inches

If the water pressure in a pipe is 3 bar, what is this pressure in psi? (1 bar = 14.5038 psi)

• 29.01 psi

• 43.51 psi

• 30.00 psi

• 45.00 psi

Which material is most commonly used for hot water pipes due to its high thermal conductivity?

• PVC

• Copper

• Steel

• Aluminium

Calculate the flow rate in litres per minute if 10 gallons of water pass through a pipe in 5 minutes. (1 gallon = 4.54609 litres)

• 9.09 L/min

• 18.18 L/min

• 45.46 L/min

• 22.73 L/min

A pipe has a length of 20 feet. Convert this length to metres. (1 foot = 0.3048 metres)

• 6.10 metres

• 7.62 metres

• 5.00 metres

• 8.00 metres

What is the velocity of water in a pipe if the flow rate is 0.5 cubic metres per second and the cross-sectional area of the pipe is 0.1 square metres?

• 5 m/s

• 0.5 m/s

• 10 m/s

• 2 m/s

Which of the following materials is least likely to corrode when used for plumbing pipes?

• Iron

• Copper

• Lead

• Steel

If a pipe has a pressure drop of 2 psi over a length of 100 feet, what is the pressure drop per foot?

• 0.02 psi/ft

• 0.2 psi/ft

• 0.002 psi/ft

• 0.5 psi/ft

Convert a pipe length of 3 miles to feet. (1 mile = 5280 feet)

• 15840 feet

• 10560 feet

• 2640 feet

• 7920 feet

What is the density of water in kg/m³ at room temperature?

• 1000 kg/m³

• 997 kg/m³

• 950 kg/m³

• 980 kg/m³