Building Construction
The type of roof suitable in plains where rainfall is meagre and temperature is high is

Flat roof
Pitched and sloping roof
None of these
Shell roof

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Building Construction
Pick up the correct statements from the following:

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
In brick work, the efflorescence is removed by applying a solution of zinc sulphate and water

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