Question

In colloidal dispersion of starch, the maximum possible size of starch particle is

• A. 0.1 nm
• B. 1 nm
• C. greater than 10$^3$ nm
• D. 10$^3$ nm

Hint:

Colloidal particles typically range from 1 nm to 1000 nm in size. For starch in colloidal dispersion, the maximum particle size is about 10$^3$ nm.

Answer 1

The Correct Option is D

Step 1: Understanding the size of colloidal particles.
Colloidal particles generally range in size from 1 nm to 1000 nm. Starch particles in colloidal dispersion can be as large as 10$^3$ nm.
Step 2: Analyzing the options.
(A) 0.1 nm: This is too small for a colloidal particle.
(B) 1 nm: This is also too small for starch particles in colloidal dispersion.
(C) greater than 10$^3$ nm: This is incorrect, as colloidal particles are generally not larger than 10$^3$ nm.
(D) 10$^3$ nm: This is correct, as starch particles in colloidal dispersion can be as large as 10$^3$ nm.
Step 3: Conclusion.
The correct answer is (D) 10$^3$ nm.