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