Which of the following statements are true for pure substances?
  1. Pure substances contain only one kind of particles
  2. Pure substances may be compounds or mixtures
  3. Pure substances have the same composition throughout
  4. Pure substances can be exemplified by all elements other than nickel

  5. (a) (i) and (ii)
    (b) (i) and (iii)
    (c) (iii) and (iv)
    (d) (ii) and (iii)

AcademicChemistryNCERTClass 9

Correct Answer: (b) (i) and (iii)

Explanation: A pure substance is made up of only one kind of particles like element. Its composition is also the same throughout. 

Updated on 10-Oct-2022 13:29:32