1. . The basic material used for steel manufacturing depends on the system where the process takes place.
(A) Pig iron and lime (for furnace charge)
(B) High phosphorus raw material
(C) Flux and scrap
(D) All of the above
2. . Charging door, Bath, Slag tap hole and charger chamber are parts of:
(A) Crucible pit furnace
(B) Open hearth furnace
(C) Electric steel furnace
(D) Puddling furnace
3. . Steel converter is also known as:
(A) Bessemer converter
(B) Basic converter
(C) Acid converter
(D) None of these
4. . The temperature of the low carbon steel obtained will be about:
(A) 1650°C
(B) 1850°C
(C) 1950°C
(D) 2000°C
5. . Some modern large capacity electric furnace can hold a maximum charge of:
(A) 100 tons
(B) 200 tons
(C) 300 tons
(D) 400 tons
6. . In acidic Bessemer process, it is removed first:
(A) Carbon
(B) Silicon
(C) Sulphur
(D) Manganese
7. . Unnecessary elements in production of steel are removed by:
(A) Oxidation
(B) Reduction
(C) Gravity Separation
(D) None of these