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Abhijeet

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· 1 Months ago

in 28 days concrete gains upto 90% strength and after 1 year it achieves approximately 100% strength

Question:

The concrete may achieve 100% strength after

Options:
A) 21 days
B) 8 days
C) 1 year
D) 3 years
Solution:
Ans: (a) 21 days

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