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

substance”?

(a) Ice

(b) Milk

(c) Iron

(d) Hydrochloric acid

(e) Calcium oxide

(f) Mercury

(g) Brick

(h) Wood

(i) Air.

 

Answer

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
  1. Class 9
  2. Chapter 2 Class 9 - Is Matter Around Us Pure (Term 1)

About the Author

CA Maninder Singh's photo - Founder at Teachoo
CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 11 years and a teacher from the past 11 years. He teaches Science, Accounts and English at Teachoo