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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

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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