Question

Liquid dispersions of tragacanth, sodium alginate, methylcellulose and sodium carboxymethyl cellulose exhibit ………

• A. Plastic flow
• B. Bingham flow
• C. Dilatant flow
• D. Pseudoplastic flow

Hint:

Pseudoplastic = shear-thinning; flow becomes easier with stirring.

Answer 1

The Correct Option is D

These polysaccharide-based dispersions (e.g., tragacanth, sodium alginate) show pseudoplastic flow—a type of non-Newtonian flow where viscosity decreases with increasing shear rate.