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Engineering
Mechanical
ME Set-1
Engineering Materials
42

Engineering Materials MCQ with Answers

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

Engineering Materials MCQ with Answers

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Related Engineering Materials MCQ with Answers

43) which of the following impurity in cast iron makes it hard and brittle?

silicon

Sulphur

Manganese

Phosphorus

Answer is:

Sulphur

44) Grey cast iron has

carbon in the form of free graphite

high tensile strength

low compressive strength

all of these

Answer is:

carbon in the form of free graphite

45) When filing or machining cast iron makes our hands black, then it shows that______ is present in cast iron

cementite

free graphite

Answer is:

free graphite

46) White cast iron has

carbon in the form of carbide

high tensile strength

low compressive strength

all of these

Answer is:

all of these

Engineering Materials MCQ with Answers

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