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