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