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| Q. |
Pick up the incorrect statement from the following: |
| A. | the bottom and top ends of slump mould are parallel to each other |
| B. | the axis of the mould is perpendicular to the end faces |
| C. | the internal surface of the mould is kept clean and free from set cement |
| D. | the mould is in the form of a frustum of hexagonal pyramid |
| Answer» D. the mould is in the form of a frustum of hexagonal pyramid | |
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