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Which of the following compound forms the bond between sand particles in carbon dioxide moulding process.(a) Sodium(b) Amorphous silica(c) Dehydrated water(d) Carbon Monoxide |
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Answer» Correct choice is (b) Amorphous silica Explanation: Amorphous silica forms the bond between sand particles. It is produced by reaction or treatment of the mixture of sand and sodium silicates by carbon dioxide. |
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