39) The property of metal, by the virtue of which it can be drawn into wire is called

Answer is:

Ductility

Explanation:

Ductility is a property of a material enabling it to be drawn into wires.
Malleability is a property of a material enabling it to be drawn into thin sheets.

The property of metal, by the virtue of which it can be drawn into wire is called

Material science MCQ with Answers

For more MCQ's Click Here

40) Failure of a material below yield point stress due to repeated stresses is called

Answer is:

Fatigue

41) The bed of a lathe is made out of

Answer is:

Cast iron

Explanation:

Cast iron is commonly used for machinery housings or base due to its damping characteristics. It is also known for holding its shape when it is subjected to contraction and expansion due to temperature fluctuations. Hence lathe bed is usually made up of cast iron.