A. Carburising
B. Nitriding
C. Cyaniding
D. Annealing
Related Mcqs:
- Hardening of steel is not possible unless it is heated ______________ critical point?
A. Above the highest
B. Above the lowest
C. Between the first & second
D. Between the second & third - ‘Age hardening’ of duralumin is due to____________________?
A. Copper
B. Magnesium
C. Both A. & B.
D. Neither A. nor B. - The increase in hardness of metal due to its cold working is termed as the _______________ hardening?
A. Work
B. Age
C. Induction
D. Flame - Steel will respond to hardening by heat treatment processes, only when the minimum carbon content in it is _____________ percent?
A. 0.02
B. 0.2
C. 0.35
D. 0.5 - Age hardening is concerned with_________________?
A. Copper
B. Brass
C. Duralumin
D. Silver - Work hardening of a material ________________?
A. Decreases its tensile strength
B. Decreases its ductility
C. Increases its ductility
D. Does not affect its ductility - Thermometer bulb & capillary in case of mercury filled pressure spring expansion thermometer is normally made of ______________ as mercury does not amalgamate with it?
A. Copper
B. Copper alloys
C. Stainless steel
D. Monel - Galvanising is not a zinc diffusion process. A zinc diffusion process is termed as_____________________?
A. Sherardizing
B. Parkerising
C. Anodising
D. None of these - The process of heating the cold pressed metallic powder is called ______________ in powder metallurgy?
A. Precipitation
B. Fusion
C. Sintering
D. Agglomeration - Fermenter used in the production of penicillin by deep fermentation process is a ______________ lined steel vessel ?
A. Rubber
B. Monel
C. Glass
D. Nickel
