Process – mold making technique
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P: Green sand molding
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1. Pouring
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Q: Shell molding
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2. Dipping
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R: Investment molding
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3. Compaction
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S: Ceramic molding
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4. Resin bonding
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a) P-2, Q-1, R-3, S-4 b) P-1, Q-3, R-4, S-2
c) P-4, Q-2, R-2, S-3 d) P-3, Q- 4, R-1, S-1