What is the base SI unit for measuring length?

• Kilogram

• Metre

• Second

• Ampere

What is the symbol for the base SI unit of mass?

• m

• kg

• s

• K

Which base SI unit is used to measure electric current?

• Kelvin

• Second

• Metre

• Ampere

What is the symbol for the base SI unit used to measure time?

• m

• kg

• s

• K

Answer explanation

S for seconds

What is the base SI unit for thermodynamic temperature?

• Kelvin

• Celsius

• Fahrenheit

• Joule

Answer explanation

-273 degrees C is absolute zero

What is the base SI unit for measuring area?

• Kilogram

• Square metre

• Watt

• Ohm

What symbol is used to represent volume in cubic meters?

• Kg/m3

• m3

• W

• Ohm

Which unit is used to measure electric resistance?

• Watt

• Ohm

• Square metre

• Kilogram

Answer explanation

Ohms law symbol again

What plastic is commonly used as the underground mains and the service pipe to a property?

• PVC

• ABS

• PEX

• HDPE

Answer explanation

High-density polyethylene

What plastic can be used to supply hot and cold water to the draw off point inside a domestic property?

• PVC

• PEX

• ABS

• HDPE

Answer explanation

PEX pipes tend to have better resistance to extreme temperatures and thermal expansion/contraction, making them less prone to leaks or bursts.