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