HomeEngineeringTLV of ozone (O₃) and phosgene (COCl₂) in air is __________ ppm. 5697. TLV of ozone (O₃) and phosgene (COCl₂) in air is __________ ppm.By Admin / September 7, 2025 0.1 25 100 1000 ✅ 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