/6 Science Quiz (for 12 to 16 years old): Quiz 5 1 / 6Carbon, diamond and graphite are together called isotopes isomorphs allotropes isomers 2 / 6Non stick cooking utensils are coated with black paint PVC Teflon polystyrene 3 / 6The element common to all acids is sulphur carbon hydrogen oxygen 4 / 6Heavy water is PH7 tritium oxide deuterium oxide rain water 5 / 6The chemical (ethyl mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of fluorine bromine sulphur chlorine 6 / 6Monazite is an ore of titanium thorium iron zirconium Your score is 0% Restart quiz Next quiz Please rate the quiz Send feedback