Question

Which of the following is a multimolecular colloid?

• A. Silver sol
• B. Solution of rubber in organic solvent
• C. Aqueous solution of protein
• D. Aqueous polyvinyl alcohol

Hint:

In colloid chemistry, multimolecular colloids are made from aggregates of small molecules, while macromolecular colloids are made from large molecules.

Answer 1

The Correct Option is A

Step 1: Understanding multimolecular colloids.
Multimolecular colloids are those where the particles consist of aggregates of molecules, typically smaller than macromolecules. These particles can be made from small molecules or atoms.

Step 2: Analyzing the options.
(A) Silver sol: Correct — Silver sol is a colloidal solution where silver particles are dispersed in water and they form aggregates. This qualifies as a multimolecular colloid.
(B) Solution of rubber in organic solvent: This is a macromolecular colloid, not multimolecular.
(C) Aqueous solution of protein: This can be a macromolecular colloid, where proteins are large molecules and form colloidal solutions.
(D) Aqueous polyvinyl alcohol: This is a macromolecular colloid as well.

Step 3: Conclusion.
The correct answer is (A) Silver sol, as it is an example of a multimolecular colloid.