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To retard the initial setting time of cement, the compound responsible, is
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Which of the following metamorphic rocks has the most weather resisting characteristics?
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The method of addition polymerization is used for obtaining:
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Percentage of carbon content in mild steel is
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Red short iron cracks when bent due to the presence of
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Le-Chatelier’s device is used for determining the
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Pig iron made from haematite ores free from sulphur, phosphorus and copper, is known as
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The percentage of alumina in a good brick earth lies between
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A heavy stone is suitable for
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Which of the following should be used for hearting of thicker walls?
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