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To avoid difficulties in making of molds, sand should be cooled below what temperature?(a) 100°F(b) 120°F(c) 140°F(d) 160°F |
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Answer» Right choice is (a) 100°F To elaborate: In sand preparation, the requirement of temperature for production is less than 40°C. The said sand, being used for manufacturing, should be cooled down below 100°F to avoid later difficulties in making the molds. |
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