Question

Following are various types of colloids.
Match column X with column Y.
$\begin{array}{cc}\text{X (Colloids)}& \text{Y (Classification)}\\ \text{(i) Cloud}& \text{(P) P. Sol}\\ \text{(ii) Gelatin}& \text{(Q) Aerosol}\\ \text{(iii) Soap lather}& \text{(R) Emulsion}\\ \text{(iv) Milk}& \text{(S) Foam}\end{array}$

• A. i- P, ii- Q, iii- R, iv- S
• B. i- P, ii- R, iii- Q, iv- S
• C. i- Q, ii- P, iii- S, iv- R
• D. i- Q, ii- P, iii- R, iv- S

Answer 1

The correct option is C i- Q, ii- P, iii- S, iv- R

Cloud is an aerosol where the dispersed phase is liquid and the dispersion medium is gas.
Gelatin is a sol where the dispersed phase is liquid and the dispersion medium is solid.
Soap lather is a foam where the dispersed phase is gas and the dispersion medium is liquid.
Milk is an emulsion where the dispersed phase is oil (liquid fat) and the dispersion medium is liquid (water).