A. Decreases its tensile strength
B. Decreases its ductility
C. Increases its ductility
D. Does not affect its ductility
Related Mcqs:
- ‘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 - ______________ is not a case hardening process?
A. Carburising
B. Nitriding
C. Cyaniding
D. Annealing - 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 - Failure of a material is termed as fatigue failure, if it fails below the yield point. The resistance to fatigue failure of a material is measured by the__________________?
A. Ultimate tensile strength (U.T.S.)
B. Endurance limit
C. Elastic limit
D. None of these - Which of the following is the softest material ?
A. Quartz
B. Calcite
C. Corundum
D. Fluorite - Most suitable material of construction for the storage of concentrated nitric acid is__________________?
A. Cast iron
B. Monel
C. Karbate
D. Aluminium or chromium alloys (Cr > 18% for cold acid) - The softest material just next to talc in the Mhos scale is_________________?
A. Quartz
B. Gypsum
C. Feldspar
D. Fluorite
