HomeGeneral KnowledgeThe main constituents of pearls are 4892. The main constituents of pearls areBy Admin / September 19, 2025 A. calcium oxide and ammonium chloride B. calcium carbonate and magnesium carbonate C. aragonite and conchiolin D. ammonium sulphate and sodium carbonate ✅ The correct answer is option B.
1. In which field is the Dhanwantri Award given? Leave a Comment / Awards and Honours MCQs, General Knowledge / By Admin
2. Which of the following awards was conferred on Mrs. Kiran Bedi? Leave a Comment / Awards and Honours MCQs, General Knowledge / By Admin