1.

Which of the following pairs in respect of ordinary Portland cement (OPC) are correctly matched1. Initial setting time....30 minutes2. Final setting time....10 hours3. Normal consistency....10%Select the correct answer from the codes given below :

A. 1, 2 and 3
B. 2 and 3
C. 1 and 2
D. 1 and 3
Answer» D. 1 and 3


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