Engineering Materials MCQ Question with Answer

Engineering Materials MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

Question No : 29
The presence of sulphur in pig iron makes

It easily machinable

It brittle

It hard

The casting unsound

Question No : 30
Which of the following is added in low carbon steels to prevent them from becoming porous?

Sulphur

Phosphorus

Manganese

Silicon

Question No : 31
Iron-carbon alloys containing 1.7 to 4.3% carbon are known as

Eutectic cast irons

Hypoeutectic cast irons

Hypereutectic cast irons

None of these

Question No : 32
Which of the following is the binding material in cemented carbides?

Cobalt

Nickel

Vanadium

Iron

Question No : 33
Which of the following property is desirable for materials used in tools and machines?

Elasticity

Plasticity

Ductility

Malleability

Question No : 34
Pick up the wrong statement Nickel and chromium in steel help in

Providing corrosion resistance

Improving machining properties

Providing high strength at elevated temperatures

Raising the elastic limit

Question No : 35
Cast iron is a

Ductile material

Malleable material

Brittle material

Tough material