Q. Consider the following statements regarding mixture:
1.Mixtures are constituted by more than one kind of pure form of matter.
2.Sugar is a substance which contains only one kind of pure matter and its composition is the same throughout.
Which of the statements given above is/are correct?

[A] 1 only

[B] 2 only

[C] Both 1 and 2

[D] Neither 1 nor 2

Answer: C
Notes:

Explanation: Mixtures are constituted by more than one kind of pure form of matter. We know that dissolved sodium chloride can be separated from water by the physical process of evaporation.

  • However, sodium chloride is itself a pure substance and cannot be separated by physical process into its chemical constituents.
  • Similarly, sugar is a substance which contains only one kind of pure matter and its composition is the same throughout.

Source: Science NCERT 9th Class