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Pure limestones are indicated by _________ colour.(a) Brown(b) Blue(c) Grey(d) WhiteI have been asked this question in an international level competition.My question is based upon Lime topic in portion Glass, Lime, Clay Products & Bricks of Construction & Building Materials |
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Answer» RIGHT OPTION is (d) White To explain: Pure limestones are INDICATED by white COLOUR. However, HYDRAULIC limestones are indicated by brown, bluish-grey or some dark colour. |
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