Question 3 — You pour oil into - Questions at the end of the chapter - Chapter 9 Class 8 - The Amazing World of Solutes, Solvents & Solutions

Last updated at June 17, 2026 by

Q 3
Question

You pour oil into a glass containing some water. The oil floats on top. What does this tell you?

  • (i) Oil is denser than water
  • (ii) Water is denser than oil
  • (iii) Oil and water have the same density
  • (iv) Oil dissolves in water
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Answer
Option (ii) is correct — water is denser than oil.

Explanation

  • Oil floats, so it is lighter than water for the same volume.
  • That means water is denser than oil.
  • Oil also does not dissolve in water.
Oil floating shows it is less dense than water, so water is denser than oil.
← Back to concept: 9.4 Why Do Objects Float or Sink in Water?
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