HomeEngineeringIf D.O. concentration falls down to zero in any natural drainage, it indicates the zone of__________________? 403. If D.O. concentration falls down to zero in any natural drainage, it indicates the zone of__________________?By Admin / September 7, 2025 A. Degradation B. Active decomposition C. Recovery D. Cleaner water ✅ The correct answer is option B.
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