HomeEngineeringQuartz is 3181. Quartz isBy Admin / September 7, 2025 stable form of silica upto 870°C. converted to tridymite on firing between 870 to 1470°C. transformed to crystoballite on heating above 1470°C. all (a), (b) and (c). ✅ The correct answer is option D.
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