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For a good quality cement,the ratio of s...

For a good quality cement,the ratio of silica (`SiO_2`) to alumina (`Al_2O_3`) is between :-

A

1.5 - 2.5

B

2.5 - 4.0

C

3.0 - 4.5

D

2.0 - 3.5

Text Solution

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The correct Answer is:
B
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