Question

three different mixtures in water are prepared using chalk powder detergent powder and sugar. which of these:

a;would show tyndall effect?

b;would leave residue on filter paper after filteration?

c;would give transparent solution?

Answer 1

Chalk powder in water forms suspension, detergent in water forms colloidal solution and sugar in water forms true solution. Therefore,
1) Chalk in water and detergent in water will show Tyndall effect since colloids and suspensions show Tyndall effect.
2) The suspension of chalk in water will leave residue on filter paper. The particles of chalk donot dissolve in water and will be left on the filter paper.
3) Sugar dissolves in water to give a transparent solution.