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Mechanical
ME Set-1
Engineering Materials
44

Engineering Materials MCQ with Answers

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

Engineering Materials MCQ with Answers

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Related Engineering Materials MCQ with Answers

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

47) Which of the following impurity in cast iron promotes graphite nodule formation and increases the fluidity of the molten metal?

Silicon

Sulphur

Manganese

Phosphorus

Answer is:

Phosphorus

Explanation:

Phosphorus is the impurity in cast iron which promotes graphite nodule formation and increases the fluidity of the molten metal.

48) Which of the following statement is correct?

The product produced by blast furnace is called cast iron.

The pig iron is the name given to the product produced by cupola.

The cast iron has high tensile strength.

The chilled cast iron has no graphite.

Answer is:

The chilled cast iron has no graphite.

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