HomeEngineeringBiochemical Oxygen Demand (B.O.D.) of safe drinking water must be________________? 2818. Biochemical Oxygen Demand (B.O.D.) of safe drinking water must be________________?By Admin / September 7, 2025 A. nil B. 5 C. 10 D. 15 ✅ The correct answer is option A.
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