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SAND ADDITIVES MCQs – CHAPTER 7 DAE

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1. . Materials added to the molding and sand mixture to develop some special property





2. . Coal dust is used in facing sand from





3. . It is used up to 35 % for the purpose of increasing hot strength





4. . Dextrin is used in core sand up to ---- % for increasing collapsibility





5. . The additive used for increasing surface finishing of casting is





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