MOULDING SAND MCQs – CHAPTER 4 DAE 10 min Score: 0 Attempted: 0/10 Subscribe 1. . The chemical formula of silica sand is (A) SiO (B) SiO2 (C) CaO (D) CaCO3Show All Answers 2. . Silica sand contains silica percentage (A) 10-30 (B) 8-10 (C) 80-90 (D) 40-60Show All Answers 3. . Molding sand contains clay (A) 6-10 (B) 2-4 (C) 1-2 (D) 80-90Show All Answers 4. . Molding sand contains amount of water (A) 6-10 (B) 2-4 (C) 5-8 (D) 80-90Show All Answers 5. . Molding sand contains special additives (A) up to 2 (B) 6-10 (C) 1-2 (D) 80-90Show All Answers 6. . Materials added to the molding sand mixture to develop some special property in the sand (A) Binder (B) Moisture (C) Additives (D) ClayShow All Answers 7. . Most commonly used binder in molding sand is (A) Cement (B) Dextrin (C) Bentonite (D) MolassesShow All Answers 8. . The molding sand ingredient used to activate binder is (A) Coal dust (B) Clay (C) Wood flour (D) WaterShow All Answers 9. . The main constituent of molding sand is (A) Silica sand (B) Clay (C) Binder (D) MoistureShow All Answers 10. . The most common form of SiO2 is (A) Quartz (B) MgO (C) CaO (D) LimestoneShow All Answers