Malleable cast iron is produced 1) By quick cooling o

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ESE 2018 Prelims Paper I
Engineering aptitude
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Engineering aptitude

64

M: +2.00/-0.66

Malleable cast iron is produced
1) By quick cooling of cast iron.
2) By adding magnesium to molten cast iron.
3) From white cast iron by annealing.
Which of the above statements is/are correct?

[ESE 2018 Prelims Paper I]

A 1 only

B 2 only

C 3 only

D 1, 2 and 3