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

Related Mcqs:

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

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

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

   A. 0.2
   B. 2
   C. 4
   D. 8

3. 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.

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

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

5. Molten phthalic anhydride is stored in a/an _______________ vessel?

   A. Aluminium
   B. Nickel clad steel
   C. Lead lined steel
   D. Glass lined steel

6. Cast iron and steel pipes are produced by ____________ casting?

   A. Die
   B. Investment
   C. Slush
   D. True centrifugal

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

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

8. Cast iron is a ______________ material?

   A. Brittle
   B. Ductile
   C. Tough
   D. Malleable

9. Alpha iron is stable ______________ °C?

   A. Above 1403
   B. Upto 910
   C. Above 1800
   D. Between 910 & 1403

10. Wrought iron is ____________________?

    A. High carbon iron
    B. Highly resistance to acid corrosion
    C. Malleable & ductile; and hence is used for chain links, hooks & couplings
    D. An alloy of iron, chromium & carbon