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| Q. |
Pick up the correct statement from the following: |
| A. | sand stones may be divided into calcareous, siliceous and ferruginous sand stones |
| B. | concrete using sand stones, cracks due to excessive shrinkage |
| C. | broken bricks produce a concrete having good fire resisting qualities |
| D. | all the above |
| Answer» D. all the above | |
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