Question:
In grinding of wheat, the particle size distribution was bell shaped or normal distribution. The cumulative percent plot of these particles is:
In grinding of wheat, the particle size distribution was bell shaped or normal distribution. The cumulative percent plot of these particles is:
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Normal distribution: cumulative plot is S-shaped.
Also called sigmoidal curve.
Also called sigmoidal curve.
Updated On: Aug 18, 2026
- U shape
- Inverted 'U' shape
- 'S' shape
- Inverted 'V' shape
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
Particle size distribution can be plotted in different ways.
Cumulative percent plots have characteristic shapes.
Step 2: Key Formula or Approach:
No specific formula.
Need to understand particle size distribution plots.
Step 3: Detailed Explanation:
For a normal (bell-shaped) distribution, the cumulative percent plot is S-shaped.
The cumulative curve starts slowly, rises steeply in the middle, and levels off.
Other shapes are not typical for normal distributions.
Thus, the cumulative plot is 'S' shaped.
Step 4: Final Answer:
The cumulative percent plot is 'S' shape.
Hence, the correct option is (C).
Particle size distribution can be plotted in different ways.
Cumulative percent plots have characteristic shapes.
Step 2: Key Formula or Approach:
No specific formula.
Need to understand particle size distribution plots.
Step 3: Detailed Explanation:
For a normal (bell-shaped) distribution, the cumulative percent plot is S-shaped.
The cumulative curve starts slowly, rises steeply in the middle, and levels off.
Other shapes are not typical for normal distributions.
Thus, the cumulative plot is 'S' shaped.
Step 4: Final Answer:
The cumulative percent plot is 'S' shape.
Hence, the correct option is (C).
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