Hardening of steel is not possible, unless it is heated _________________ critical point ?

Related Mcqs:

Maximum amount of thermal radiation is emitted at all wavelengths at any specified temperature by a/an ______________ body?

A. Grey B. Black C. Opaque D. White...

Strain hardening effect in metals subjected to cold working is due to the _______________ mechanism?

A. Slip B. Fracture C. Winning D. Dislocation...

Lead pencil contains____________________?

A. Graphite B. Lead sulphide C. Lead D. Both B. & C....

Which of the following performance characteristics of a S.I engine is not affected by the front end volatility of the petrol used ?

A. Vapour locking B. Hot starting C. Spark plug fouling D. All A, B & C...

Magnesium is present in___________________?

A. Haemoglobin B. Chlorophyll C. Hypo solution D. None of these...