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Question
Pick up the correct statements from the following :
Options:
A .  cracks appear on the plastered surface in the form of hair cracks
B .  in brick work, the efflorescence is removed by applying a solution of zinc sulphate and water
C .  excessive thermal variations in the backing or plaster causes the plaster to fall
D .  all the above.
Answer: Option D
Answer: (d).all the above.

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