Building Construction
The type of ashlar masonry in which stones are finely chisel dressed and thickness of joints does not exceed 3 mm, is

Coursed ashlar masonry
Ashlar facing masonry
Chamfered ashlar masonry
Random coursed ashlar masonry

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Building Construction
For constructing a terrazzo floor, Pick up the incorrect statement from the following:

A 32 mm thick layer of cement concrete (1 : 2 : 4) is laid on the base course and the surface is made smooth by trowelling
Glass strips are driven into the layer according to the pattern required
After final grinding is over, oxalic acid mixed with water is spread over and rubbed hard with soft material
A base course is prepared as in cement concrete flooring

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