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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