Subtopic: Mechanics and energy requirement in size reduction of agriculture produce
Question Statement:
Work index in size reduction can be obtained by multiplying Bond's energy constant with:
Options:
(A) 10
(B) 10 (alt. exponent, OCR-corrupted)
(C) 10³
(D) 10⁴
Official Answer Key:
B
Step-by-Step Solution & Explanation
Bond's law defines specific energy E = Wi(1/√P - 1/√F) with Wi (the Work Index) equal to Bond's tabulated energy constant scaled by a factor of 10 (kWh per short ton, referenced to 80% passing size in microns). The source PDF's exponents were lost in OCR (options (A)–(D) are visually near-identical '10^n' values); per the official key the multiplying factor is 10 in the units convention used. Answer: B (per official key).
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