Question 2 — Choose the correct options - Questions at the end of the chapter - Chapter 5 - Exploring Mixtures and their Separation (Exploration)

Last updated at June 28, 2026 by

Which among the following mixtures show the Tyndall effect? (a) air and dust particles (b) copper sulfate and water (c) starch and water (d) acetone and water
(i) a and b (ii) b and d (iii) a and c (iv) c and d
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The correct option is (iii) a and c.

Air with dust (a) and starch in water (c) are colloids/suspensions, so their particles scatter light and show the Tyndall effect. Copper sulfate in water (b) and acetone in water (d) are true solutions with very tiny particles, so they do not scatter light.

← Back to concept: 5.5 Tyndall Effect
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