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Building Materials - Section 7 :: Discussion
| 12. | Pick up the correct statement from the following: | |
| A. | The lime in excess makes the cement unsound and causes the cement to expand and disintegrate | |
| B. | The silica in excess makes the cement stronger but its setting time also increases | |
| C. | The excess amount of alumina weakens the cement | |
| D. | All of these. | |
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