Question Bank • QB_APE_EXP_069 MCQ • 1 Mark

Section 6: Agricultural Process Engineering

Engineering Properties of Agriculture Produce

Subtopic: Rheological properties

Question Statement:

A liquid food whose apparent viscosity increases continuously with an increasing rate of shear deformation is characterized as:

Options:

  • (A) Pseudoplastic (shear-thinning)
  • (B) Dilatant (shear-thickening)
  • (C) Bingham plastic
  • (D) Newtonian

Answer Key:

B

Step-by-Step Solution & Explanation

In dilatant (shear-thickening) fluids, the flow behavior index $n > 1$, causing apparent viscosity to increase as shear rate increases (e.g. concentrated starch suspensions).
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