Question:
Which of the following is an example of macromolecular colloid?
Which of the following is an example of macromolecular colloid?
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Macromolecular colloids are made of giant molecules such as proteins, starch or cellulose.
Updated On: Oct 1, 2026
- Proteins
- Detergents
- Soap
- \(\text{S}_8\) sulphur molecules
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept:
Colloids are classified by the nature of the dispersed particles into multimolecular, macromolecular and associated colloids.
Step 2: Key Formula or Approach:
In a macromolecular colloid, each dispersed particle is a single very large molecule (a macromolecule) of size in the colloidal range.
Step 3: Detailed Explanation:
Proteins are polymers of amino acids with large molar masses, so a single protein molecule is already of colloidal size. Proteins, starch and cellulose are standard examples of macromolecular colloids.
Detergents and soaps are associated colloids (micelles). Their small molecules gather into micelles only above a certain concentration.
Sulphur sol made of \(\text{S}_8\) molecules is a multimolecular colloid, where many small molecules clump into a particle.
Final Answer:
Proteins form a macromolecular colloid, option (A). \[ \boxed{\text{Proteins (A)}} \]
Colloids are classified by the nature of the dispersed particles into multimolecular, macromolecular and associated colloids.
Step 2: Key Formula or Approach:
In a macromolecular colloid, each dispersed particle is a single very large molecule (a macromolecule) of size in the colloidal range.
Step 3: Detailed Explanation:
Proteins are polymers of amino acids with large molar masses, so a single protein molecule is already of colloidal size. Proteins, starch and cellulose are standard examples of macromolecular colloids.
Detergents and soaps are associated colloids (micelles). Their small molecules gather into micelles only above a certain concentration.
Sulphur sol made of \(\text{S}_8\) molecules is a multimolecular colloid, where many small molecules clump into a particle.
Final Answer:
Proteins form a macromolecular colloid, option (A). \[ \boxed{\text{Proteins (A)}} \]
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