HomeEngineeringThreshold limit value (TLV) of CO in air is __________ ppm. 5800. Threshold limit value (TLV) of CO in air is __________ ppm.By Admin / September 7, 2025 5 50 2000 5000 ✅ 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