Q: AS per IS 456 : 2000, the minimum grade of concrete for plain concrete in severe exposure conditions is IS 456 : 2000 के अनुसार, गंभीर जोखिम की स्थिति में सादे कंक्रीट के लिए कंक्रीट का न्यूनतम ग्रेड है
A.
M15
B.
M20
C.
M25
D.
M30
Correct Answer:
Option B -
Explanations:
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