1) What is the SI unit for temperature? a) Fahrenheit. b) Centigrade. c) Celsius. d) Kelvin. 2) What is the SI unit for mass? a) Kg b) Newton c) Pound d) Bar 3) What is the derived SI Unit for Velocity? a) L/s b) m/s c) kg/m3 d) Kph 4) What is there area of the diagram? a) 16.5m2 b) 16.5m3 c) 54m2 d) 54m3 5) What is the volume of the diagram? a) 20.5m2 b) 20.5m3 c) 216m2 d) 216m3 6) What is the relative density of natural gas? a) 0.6 b) 1.0 c) 1.5 d) 2.0 7) What is the relative density of air? a) 0.6 b) 1.0 c) 1.5 d) 2.0 8) At what temperature is water when it is at its most dense? a) −10°C b) 0°C c) 2°C d) 4°C 9) Which of the following is an alloy? a) Copper. b) Steel. c) Lead. d) Tin. 10) Which ancient mathematician designed a simple screw-type mechanism which, when rotated, can lift water from a lower to a higher level? a) Einstein. b) Archimedes c) Plato. d) Grunfoss. 11) What temperature in kelvin is 60°C? a) 333°C b) 160°C c) 213°C d) 140°C 12) Brass is an alloy of which two metals? a) Lead and tin. b) Copper and zinc. c) Iron and carbon. d) Copper and tin. 13) Which SI unit determines the flow rate of a hot-water tap? a) L/m b) g/m c) L/s d) m/s 14) How much will water expand when heated from 4°C to boiling point? a) 4% b) 10% c) 15% d) 20% 15) What pressure would there be at the outlet of a tap if it was located 10m below the base of a cold-water storage cistern (CWSC)? a) 10 bar b) 1 bar (100kPa) c) 10 bar (10Nm3) d) 100 millibar 16) What type of force is being applied in the image? a) Shear force. b) Tensile force. c) Compressive force. d) Gravitational force. 17) What unit of gas will be displayed on a domestic metric gas meter? a) ft3/h b) m2 c) m3/h d) Btu/m3 18) What type of plastic is commonly used for the underground water mains and the service pipe to a domestic property? a) PVCu. b) MDPE (medium density polyethylene). c) Polybutylene. d) Polypropylene. 19) Which term describes the ability of a material to be reshaped without breaking? a) Conductivity. b) Malleability. c) Ductility d) Tensility. 20) Neutral water has a pH of: a) 2 b) 7 c) 4 d) 9

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