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The presence of chromium oxide in cement imparts _________ colour.

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The presence of chromium oxide in cement imparts _________ colour.

(a) Green

(b) Orange

(c) Blue

(d) Red

This question was posed to me during an internship interview.

This intriguing question comes from Plain and Reinforced in section Miscellaneous Materials, Plain and Reinforced Cement Concrete of Construction & Building Materials

1 Answer

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The correct answer is (a) Green

To elaborate: We can obtain cement of desired colour by mixing mineral pigments with the ordinary cement. The presence of chromium oxide in cement imparts a green colour.

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