Building Materials
Proper amount of entrained air in concrete results in
(i) Better workability
(ii) Better resistance to freezing and thawing
(iii) Lesser workability
(iv) Less resistance to freezing and thawing

(iii) and (iv)
(i) and (iv)
(ii) and (iii)
(i) and (ii)

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Building Materials
Distemper is

A paint consisting of colored cement and water
A water proofing agent
A drying agent
A paint consisting of powdered chalk, pigments and water

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