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