Question

Match the column I with column II and mark the appropriate choice.

Column I	Column II
(A) Cheese	(i) Liquid in gas
(B) Dust	(ii) Liquid in solid
(C) Milk	(iii) Solid in gas
(D) Fog	(iv) Liquid in liquid

• A. (A) $\to$ (iii), (B) $\to$(iv), (C) $\to$ (ii), (D) $\to$ (i)
• B. (A) $\to$ (iv), (B) $\to$ (iii), (C) $\to$ (ii), (D) $\to$ (i)
• C. (A) $\to$ (i), (B) $\to$ (ii), (C) $\to$ (iii), (D) $\to$ (iv)
• D. (A) $\to$ (ii), (B) $\to$ (iii), (C) $\to$ (iv), (D) $\to$ (i)

Answer 1

Answer: (D)

(A) $\to$ (ii), (B) $\to$ (iii), (C) $\to$ (iv), (D) $\to$ (i)

• A colloid is a heterogeneous system in which one substance is dispersed (dispersed phase) as very fine particles in another substance called dispersion medium.
  

We can see various colloidal systems such as-

• Fog is a colloidal system in which liquid is dispersed in solid.
• Milk is a colloidal system in which liquid is dispersed in liquid.
• Whipped cream is a foam is which gas is dispersed in liquid.
• Paint is a colloidal system in which solid is dispersed in liquid.
• Cheese is a colloidal system in which liquid is dispersed in solid.
• Dust is a colloidal system in which solid is dispersed in gas.