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Question 40

For a good quality cement, the ratio of lime to the total of the oxides of Si, Al and Fe should be as close as to

Solution

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For good quality cement, the ratio:

$$\frac{\text{Lime}}{\text{Silica} + \text{Alumina} + \text{Ferric oxide}}$$

should be close to: $${2}$$

This ratio ensures proper strength and setting properties of cement.
Hence, Option C is correct

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