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