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Which is the most widely used resin in shell moulding?(a) Phenol formaldehyde(b) Ethanol formaldehyde(c) Phenol(d) EthanolI got this question in an internship interview.Asked question is from Special Casting Techniques topic in section Special Casting Techniques of Casting-Forming-Welding I

Answer»

The correct CHOICE is (a) Phenol FORMALDEHYDE

The best explanation: Phenol formaldehyde is used as resin in shell MOULDING. It acts like a thermoplastic material.



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