/6 Science Quiz (for 12 to 16 years old): Quiz 19 1 / 6In which of the following activities silicon carbide is used? Making casts for statues Making cement and glass Disinfecting water of ponds cutting very hard substances 2 / 6Tetraethyl lead is used as mosquito repellent petrol additive pain killer fire extinguisher 3 / 6Which of the following is used as a lubricant? Iron Oxide Graphite Silica Diamond 4 / 6The filament of an electric bulb is made of nichrome iron tungsten graphite 5 / 6Sodium metal is kept under water alcohol petrol kerosene 6 / 6What is laughing gas? Carbon monoxide Hydrogen peroxide Sulphur dioxide Nitrous Oxide Your score is 0% Restart quiz Next quiz Please rate the quiz Send feedback By WordPress Quiz plugin
