1) Water from the Kitchen tap is called a) Wholesome b) Drinking c) Pure d) H2O 2) Is copper a good conductor of heat and electricity a) Yes b) No 3) Is a Ph level of 8 Acidic or Alkaline a) Alkaline b) Acidic 4) If brass is a metal alloy, what elements does it contain a) Copper and iron b) Copper and steel c) Copper and solder d) Copper and zinc 5) Does a shiny surface absorb or reflect heat a) Absorb b) Reflect 6) Absolute zero is a) -273 Centigrade b) 0 Centigrade c) 273 Kelvin 7) What water type can corrode pipework and materials a) Hard water b) Soft water 8) Heat from the sun comes to us by a) Conduction b) Radiation c) Convection

Plumbing Science UNIT 113

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