In screen analysis, the notation +5 mm/-10 mm means particles passing through ____________________?
Correct answer: A. 10 mm screen and retained on 5 mm screen
- A. 10 mm screen and retained on 5 mm screen
- B. 5 mm screen and retained on 10 mm screen
- C. Both 5 mm and 10 mm screens
- D. Neither 5 mm nor 10 mm screen
Explanation
The plus sign indicates material retained on the stated larger-size boundary, while the minus sign indicates material passing the stated smaller-size boundary under the convention used here. Thus +5 mm/-10 mm denotes material passing the 10 mm screen and retained on the 5 mm screen.
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