Building Construction
Pick up the correct statements from the following:

In brick work, the efflorescence is removed by applying a solution of zinc sulphate and water
All listed here
Excessive thermal variations in the backing or plaster causes the plaster to fall
Cracks appear on the plastered surface in the form of hair cracks

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Building Construction
Which one of the following factors is considered for the orientation of buildings?

The direction of the prevailing winds in the area
The extent up to which the sunrays penetrate with the verandah
The exposure of the walls and roof of the buildings to the rays of sun
All listed here

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