Question Bank • QB_APE_EXP_102 MCQ • 1 Mark

Section 6: Agricultural Process Engineering

Evaporation and Drying

Subtopic: Drying kinetics

Question Statement:

During drying of high-moisture agricultural grains, the boundary between the constant rate drying period and the falling rate drying period occurs at the:

Options:

  • (A) Equilibrium Moisture Content (EMC)
  • (B) Critical Moisture Content (CMC)
  • (C) Saturation moisture content
  • (D) Triple point moisture content

Answer Key:

B

Step-by-Step Solution & Explanation

The Critical Moisture Content (CMC) marks the point in the drying curve where the surface of the material can no longer maintain a continuous liquid water film, terminating the constant rate period and initiating the falling rate period.
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