In a grinding operation, the limiting particle size is the size of the __________ particle in the sample.
A. Smallest
B. Largest
C. Either A or B
D. Neither A nor B
Answer: Option B
Solution (By Examveda Team)
In a grinding operation, the goal is to reduce the size of particles so that they all pass through a specified size limit.The performance of the grinding process is judged by whether the largest particles in the sample are reduced to or below the target size.
Therefore, the limiting particle size in a grinding operation is determined by the size of the largest particle in the sample, since this dictates the extent of grinding needed to achieve the desired fineness.
If the largest particle is still above the required size, further grinding is necessary; hence, the largest particle size is the limiting factor.
This Question Belongs to Chemical Engineering >> Mechanical Operations
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B. Kick's law
C. Bond's law
D. None of these
Traces of solids are removed from, liquid in a
A. Classifier
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C. Sparkler filter
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Which of the following is not categorised as a "mechanical operation"?
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The correct answer is:
B. Largest
B. Largest
✅ Explanation:
In a grinding operation, the limiting particle size refers to the largest particle in the sample — because:
It defines the coarseness of the ground material.
In most grinding and classification processes, especially when targeting a fine product, it's important to ensure even the largest particles fall below a specified size.
This maximum particle size often governs:
Equipment performance
Product quality
Further processing requirements (e.g., flotation, leaching)
🔍 Option Review:
A. Smallest – Incorrect. This doesn’t limit performance or processing.
B. Largest – ✅ Correct. The largest particle size is the limiting factor.
C. Either A or B – Incorrect. Only the largest matters.
D. Neither A nor B – Incorrect.
✅ Final Answer:
B. Largest
B. Largest