Composition percentage of CaO and Si02 in Portland cement is:

(a) 40-45% and 10-15%
(b) 85-90% and 40-45%
(c) 60-68% and 17-24 %
(d) 3-10% and 80- 90%

Anurag Mishra Professor Asked on 10th February 2016 in Chemistry.
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Answer: (c) 60 – 68% and 17 – 24%

Anurag Mishra Professor Answered on 11th February 2016.
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