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ME Set-1
Engineering Materials
38

Engineering Materials MCQ with Answers

38) Chilled cast iron is produced

by adding magnesium to molten cast iron

by quick cooling of molten cast iron

from white cast iron by annealing process

none of the these

Answer is:

by quick cooling of molten cast iron

Engineering Materials MCQ with Answers

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Related Engineering Materials MCQ with Answers

39) Nodular cast iron is produced by adding ______ to the molten cast iron.

nickel

chromium

copper

magnesium

Answer is:

magnesium

40) Malleable cast iron is produced

by adding magnesium to molten cast iron

by quick cooling of molten cast iron

from white cast iron by annealing process

none of these

Answer is:

from white cast iron by annealing process

41) When elements like nickel, chromium, copper and molybdenum are added to the molten cast iron, it produces

white cast iron

nodular cast iron

malleable cast iron

alloy cast iron

Answer is:

alloy cast iron

Explanation:

When elements like nickel, chromium, copper and molybdenum are added to the molten cast iron, it produces alloy cast iron.

42) The addition of magnesium to cast iron increases its

hardness

ductility and strength in tension

corrosion resistance

creep strength

Answer is:

ductility and strength in tension

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