HomeEngineeringThe principal gas evolved from sludge digestion tank is 5704. The principal gas evolved from sludge digestion tank isBy Admin / September 7, 2025 CO CO₂ CH₄ N₂ ✅ 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