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| Q. |
How much percent of the abrasives are recommended in general for abrasive medium? |
| A. | 10 – 15 % |
| B. | 15 – 20 % |
| C. | 25 – 30 % |
| D. | 30 – 35 % |
| Answer» D. 30 – 35 % | |
| Explanation: in practice, volumetric concentration of abrasives used range between 30 – 35 | |
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