The impure iron (pig iron) that is tapped out from blast furnace contains about _____________ percent carbon?

Related Mcqs:

1. High carbon steel contains more than _____________ percent carbon?

   A. 0.5
   B. 2.2
   C. 2.5
   D. 2.8

2. _____________ iron is produced, when molten pig iron is chilled suddenly?

   A. White cast
   B. Grey cast
   C. Wrought
   D. None of these

3. ______________ iron is produced, when molten pig iron is allowed to cool gradually?

   A. White cast
   B. Grey cast
   C. Wrought
   D. None of these

4. Maximum carbon content in cast iron is ______________ percent?

   A. 3.8
   B. 5.2
   C. 4.8
   D. 4.3

5. Carbon content in plain carbon steel is ______________ percent?

   A. 0.1 to 0.15
   B. 0.35 to 0.45
   C. 0.65 to 0.80
   D. 0.85 to 1.2

6. Dead mild steel, which contains 0.10 to 0.15 percent carbon is used for making________________?

   A. Shafts
   B. Flanges
   C. Gears
   D. Shear blades

7. Very high sulphur in pig iron makes ___________________?

   A. Its casting unsound
   B. Its hard and machinable
   C. Its brittle and malleable
   D. All A., B. & C.

8. Steel will respond to hardening by heat treatment processes, only when the minimum carbon content in it is _____________ percent?

   A. 0.02
   B. 0.2
   C. 0.35
   D. 0.5

9. White cast iron as compared to grey cast iron is ________________?

   A. More durable
   B. Very brittle
   C. Very hard
   D. All A., B. & C.

10. Carbon percentage is the same in cast iron and_________________?

    A. Wrought iron
    B. Pig iron
    C. Mild steel
    D. High silicon (14%) iron