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Substances in Common Use — Science STD 9 — Question

Maharashtra BoardEnglish MediumSTD 9ScienceSubstances in Common Use5 Marks
Question
What are salts? Give their source.
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Answer

  • The ionic compounds which do not contain H+ and OH ions and contain only one kind of cation and anion are called simple salts.
  • For example, $Na_2SO_4, K_3PO_4, CaCl_2.$
  • The sea is said to be a rich source of salts of various elements such as chlorine, sodium, magnesium, potassium, calcium, bromine.
  • The important salts found in sea water are:
    (a) Sodium chloride
    (b) Magnesium chloride
    (c) Magnesium sulphate
    (d) Potassium chloride
    (e) Calcium carbonate
    (f) Magnesium bromide

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