HomeEngineeringThe refrigerant used in small-tonnage commercial machines (hermetically sealed units) is 14512. The refrigerant used in small-tonnage commercial machines (hermetically sealed units) isBy Admin / September 13, 2025 ammonia carbon dioxide sulphur dioxide R-12 ✅ The correct answer is option C.
1. A fire tube boiler is limited to a maximum steam pressure of about __________ kg/cm². Leave a Comment / Basic Chemical Engineering MCQs, Chemical Engineering, Engineering / By Admin
2. Transformer cores are normally made from Leave a Comment / Basic Chemical Engineering MCQs, Chemical Engineering, Engineering / By Admin