/6 Science Quiz (for 12 to 16 years old): Quiz 10 1 / 6The main constituents of pearls are calcium carbonate and magnesium carbonate calcium oxide and ammonium chloride aragonite and conchiolin ammonium sulphate and sodium carbonate 2 / 6Which of the following is the lightest metal? Silver Lead Lithium Mercury 3 / 6Which of the following is not an isotope of hydrogen? Tritium Protium Yttrium Deuterium 4 / 6Water is a good solvent of ionic salts because It has a high dipole moment It has a high boiling point It has no colour It has a high specific heat 5 / 6Bell metal is an alloy of nickel and copper zinc and copper tin and copper brass and nickel 6 / 6Amalgams are alloys which have great resistance to abrasion highly coloured alloys alloys which contain mercury as one of the contents alloys which contain carbon Your score is 0% Restart quiz Next quiz Please rate the quiz Send feedback
