SAND ADDITIVES MCQs – CHAPTER 7 DAE 5 min Score: 0 Attempted: 0/5 Subscribe 1. . Materials added to the molding and sand mixture to develop some special property (A) Additives (B) Binder (C) Parting powders (D) ClayShow All Answers 2. . Coal dust is used in facing sand from (A) 5-8% (B) 5-10% (C) 3-8% (D) 1-5%Show All Answers 3. . It is used up to 35 % for the purpose of increasing hot strength (A) Silica flour (B) Coal dust (C) Wood flour (D) PitchShow All Answers 4. . Dextrin is used in core sand up to ---- % for increasing collapsibility (A) 10 (B) 10 (C) 7 (D) 3-8Show All Answers 5. . The additive used for increasing surface finishing of casting is (A) Coal dust (B) Silica flour (C) Wood flour (D) PitchShow All Answers
