Mho’s scale of hardness, which consists of 10 standard minerals is used for the measurement of _______________ hardness?

Question: __________ is the most suitable lubricant for drawing mild steel wires?
[A].

Kerosene

[B].

Water

[C].

Sodium stearate

[D].

Lime water

Answer: Option C

Explanation:

No answer description available for this question.

Question: Grey cast iron (used for making underground water pipes and manhole covers) as compared to steel has higher
[A].

ductility

[B].

impact strength

[C].

machinability

[D].

melting point

Answer: Option C

Explanation:

No answer description available for this question.

Question: In cold working of metal as compared to its hot working
[A].

cracks and blow holes are eliminated.

[B].

ductility and impact strength improves.

[C].

appreciable strain hardening is produced.

[D].

yield stress, hardness and fatigue strength is not at all affected.

Answer: Option D

Explanation:

No answer description available for this question.