HomeEngineeringBlack smoke coming out of the chimney of a furnace is an indication of the use of __________ in the furnace. 5630. Black smoke coming out of the chimney of a furnace is an indication of the use of __________ in the furnace.By Admin / September 7, 2025 Low amount of excess combustion air Large quantity of excess combustion air Hydrocarbon fuel Pulverised coal as fuel ✅ 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