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WBCS Main Examination 2023 — Paper IV: General Studies II · Question 148 of 200

Q148
General ScienceChemistry
Which one of the following is most likely to exhibit Tyndall effect?
  1. a.Sugar and water mixture
  2. b.Potash alum and water mixture
  3. c.Chalk powder and water mixture
  4. d.Potassium permanganate and water mixture

Answer: (C) Chalk powder and water mixture

Chalk powder in water forms a suspension (with colloidal-size particles) large enough to scatter a beam of light, showing the Tyndall effect. Sugar, potash alum and potassium permanganate dissolve to form true solutions whose particles are too small to scatter light.

Q147 Whole paperQ149
Which one of the following is most likely to exhibit Tyndall effect? — WBCS Main Examination 2023 Q148 | Prostuti360°