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UPSC Civil Service Exam Questions - Engineering

Q1:

For complete hydration of cement the W/C ratio needed is

A less than 0.25

B more than 0.25 but less than 0.35

C more than 0.35 but less than 0.45

D more than 0.45 but less than 0.60

ANS:C - more than 0.35 but less than 0.45

Minimum water cement ratio for full hydration is 0.36.