Question

Will a sugar solution in water show Tyndall effect?

• A. True
• B. False

Answer 1

The correct option is B False

Substances are classified into solution, colloids and suspension depending upon the particle size in solution.

Solution	Colloids	Suspension
The solute particles which are dissolved in solvent have size less than 1 nm.	The colloidal particles have size in the range 1-1000 nm.	The suspended particles have size greater than 1000 nm.
The particles can not see with the naked eye, they do not settle down.	The particles are too small, they do not settle down and show Tyndall effect.	Particles are large enough to see with the naked eye and settle down when left undisturbed.
Example: sugar solution.	Examples: milk.	Example: Sand in water.

• Colloidal particles only show Tyndall effect, i.e when light passed through the solution, path of the light become visible due to scattering of light by the colloidal particles.
• Since sugar solution belongs to true solution category, it will not show Tyndall effect.

Therefore, the given statement is false.