Question
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
Options:
A .  (i) and (iv)
B .  (iii) and (iv)
C .  (i) and (ii)
D .  (ii) and (iii)
Answer: Option C
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