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Which of the following moulds or moulding is also known as sodium silicate process.

Which of the following moulds or moulding is also known as sodium silicate process. Correct Answer Co2 moulding

Carbon dioxide moulding is also known as sodium silicate process is one of the widely used processes for preparing of moulds and cores. Basically, sodium silicate is used as a binder, but it binds the sand particles only in the presence of Co2. Co2 is passed through the mould to tighten it, as shown in below figure.

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