Which of the following compounds is specifically added during the final stages of the manufacture of — s Block Elements Chemistry Question

💡 Solution & Explanation

During the grinding of cement clinker, $2-3\%$ by weight of gypsum ($CaSO_4 \cdot 2H_2O$) is added. This addition prevents the premature setting (flash setting) of the cement, particularly driven by tricalcium aluminate, thereby delaying the setting time so that it hardens effectively.