Allied & ICAR Exam Bank • ALLIED_1275 MCQ • 1 Mark

Section 6: Agricultural Process Engineering

Size Reduction and Milling

Subtopic: Kick's Law

Question Statement:

Kick's law of comminution assumes that the energy required for size reduction is directly proportional to the:

Options:

  • (A) Reduction ratio, i.e., \ln(d_1 / d_2)
  • (B) Increase in specific surface area
  • (C) Length of crack propagation
  • (D) Square of diameter ratio

Answer Key:

A

Step-by-Step Solution & Explanation

Kick's law $E = K_K \ln(d_1 / d_2)$ posits that equal fractional reductions in particle size require equal amounts of energy regardless of original particle size, applying best to coarse crushing.
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