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| Q. |
For railway ballast, the stone should be |
| A. | soft with a uniform texture |
| B. | hard, heavy, strong and durable |
| C. | hard, tough, resistant to abrasion and durable |
| D. | hard, dense, durable, tough and easily workable |
| Answer» D. hard, dense, durable, tough and easily workable | |
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