Annealing of white cast iron produces _____________________ iron?

Related Mcqs:

1. _____________________ of grey cast iron produces white cast iron?

   A. Tempering
   B. Rapid heating
   C. Rapid cooling
   D. Slow cooling

2. ______________________ iron is produced by the annealing of white cast iron?

   A. Malleable
   B. Nodular
   C. Ductile
   D. Grey

3. Carbon is present in the form of _______________________ in grey cast iron ?

   A. Spheroids
   B. Nodular aggregates of graphite
   C. Flakes
   D. Cementite

4. ______________ joint is usually used for joining cast iron pipes mostly used for temporary pipelines, where it may be necessary to dismantle & reassemble the pipeline very frequently ?

   A. Collar
   B. Flanged
   C. Bell and Spigot
   D. Expansion

5. Cast iron contains ____________________ percent carbon?

   A. 2.5
   B. 3.75
   C. 4.75
   D. 5.25

6. Steel & cast iron pipes are produced by ______________ casting ?

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

7. Silicon percentage in acid resistant cast iron is about ___________________?

   A. 4
   B. 8
   C. 14
   D. 20

8. Oxide layer formed on the non-ferrous metal surface after its annealing is__________________?

   A. Removed by acid pickling
   B. Hammered into the surface
   C. Removed with coarse emery cloth
   D. Left as such to protect the surface

9. With increase in annealing temperature, the following defect density decreases?

   A. Vacancy
   B. Dislocation
   C. Grain boundary
   D. All of these

10. Cupola produces _________________ iron?

    A. Pig
    B. Cast
    C. Wrought
    D. Carbon free