Check sibling questions

Which of the following materials fall in the category of a “pure


(a) Ice

(b) Milk

(c) Iron

(d) Hydrochloric acid

(e) Calcium oxide

(f) Mercury

(g) Brick

(h) Wood

(i) Air.



The substances that are made up of only one type of particles are called pure substances.

Hence, the pure substances in the above list are

  • Ice - made of H 2 O
  • Iron - Made of Fe
  • Hydrochloric Acid - Made of HCl
  • Calcium Oxide - Made of CaO
  • Mercury - Made of Hg

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Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 13 years and a teacher from the past 17 years. He teaches Science, Economics, Accounting and English at Teachoo