Question

List I contains the type of colloid while List II contains the examples

Choose the correct match

• A. (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
• B. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
• C. (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
• D. (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
• E. (a)-(i), (b)-(iii), (c)-(iv), (d)-(ii)

Hint:

Remember: Sol → solid in liquid Gel → liquid in solid Foam → gas in liquid Aerosol → particles in gas

Answer 1

The Correct Option is B

Concept: Colloids are classified based on dispersed phase and dispersion medium:
• Sol: solid in liquid
• Aerosol: solid/liquid in gas
• Gel: liquid in solid
• Foam: gas in liquid

Step 1: Matching each type carefully (a) Sol: solid dispersed in liquid → example: plant cell fluids contain proteins dispersed in water → (iv) (b) Aerosol: solid/liquid dispersed in gas → dust particles in air → (i) (c) Gel: liquid dispersed in solid → cheese → (ii) (d) Foam: gas dispersed in liquid → soap lather → (iii)

Step 2: Final matching \[ (a)-(iv),\quad (b)-(i),\quad (c)-(ii),\quad (d)-(iii) \]