1. . Material applied on mold and core surface to achieve good surface finishing is called
(A) Binder
(B) Surface dressing
(C) Additive
(D) Saw dust
2. . Black lead is a crystalline form of
(A) Graphite
(B) Coal
(C) Pitch
(D) Clay
3. . Water based coating material used for steel is
(A) Fire clay
(B) Graphite
(C) Silica flour
(D) Coal dust
4. . Spirit based coating material suitable for cast iron is
(A) Coal dust
(B) Fire clay
(C) Silica flour
(D) Graphite
5. . Graphite is not used as coating material suitable for
(A) Cast iron
(B) Copper
(C) Steel
(D) Non-ferrous metals