White cement should have least percentage of-

Aluminium oxide

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Iron oxide

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Silica

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Sodium oxide

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Solution

The correct option is B Iron oxide
White cement is manufactured from pure white chalk and clay free from iron oxide. Greyish colour cement is due to iron oxide.

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White cement should have least percentage of-

The correct option is B Iron oxideWhite cement is manufactured from pure white chalk and clay free from iron oxide. Greyish colour cement is due to iron oxide.

The correct option is B Iron oxide
White cement is manufactured from pure white chalk and clay free from iron oxide. Greyish colour cement is due to iron oxide.