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