HomeEngineeringIn order to protect the aquatic creatures, the dissolved oxygen content in fresh water stream should never be less than __________ PPm. 20. In order to protect the aquatic creatures, the dissolved oxygen content in fresh water stream should never be less than __________ PPm.By Admin / September 6, 2025 A. 0.5 B. 1 C. 5 D. 20 ✅ 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