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| Q.47 | The Thermal Arrest; a part of the cooling curve for a casting known as “Thermal Arrest” is | |
| Ans | 1. Solidification of metal using latent heat of fusion | |
| 2. Immediate cooling of sand mould | ||
| 3. Blocking of cooling of metal by the riser | ||
| 4. Blocking of cooling of metal by the sand mould |
Correct Ans Provided: 1
