/6 Science Quiz (for 12 to 16 years old): Quiz 6 1 / 6Most soluble in water is sulphur sugar common salt camphor 2 / 6Which of the following was to be discovered first in the chromospheres of the sun? Xenon Krypton Helium Neon 3 / 6Potassium nitrate is used in medicine salt fertiliser glass 4 / 6Permanent hardness of water may be removed by the addition of lime potassium permanganate alum sodium carbonate 5 / 6The most important ore of aluminium is bauxite galena calcite calamine 6 / 6Soda water contains nitrous acid carbon dioxide carbonic acid sulphuric acid Your score is 0% Restart quiz Next quiz Please rate the quiz Send feedback By WordPress Quiz plugin