A. Phosphorous and tungsten
B. Nickel and chromium
C. Lead and vanadium
D. Molybdenum and tungsten
Related Mcqs:
- The process of coating steel sheets by zinc to improve its corrosion resistance is called___________________?
A. Calorising
B. Galvanising
C. Zincification
D. Tempering - Corrosion involves exchange of electrons in ____________ corrosion?
A. Chemical
B. Electrochemical
C. Both A. & B.
D. Neither A. nor B. - Addition of ______________ to the steel helps in increasing the residual magnetism in steel used for making magnets?
A. Chromium
B. Nickel
C. Tungsten
D. Cobalt - Residual magnetism in steel for magnets is increased by the addition of__________________?
A. Nickel
B. Cobalt
C. Tungsten
D. Chromium - Corrosion resisting properties of cast iron are significantly improved by the addition of 12 – 15% of___________________?
A. Tungsten
B. Vanadium
C. Silicon
D. All A., B. & C. - Most common stainless steel type 316, which is highly resistant to corrosion contains______________?
A. 16-13% Cr 10-14% Ni and 2-3% Mo
B. 20-22% Cr, and 8-10% Ni
C. 2-4% Cr, 22% NI and 2-4% Mo
D. None of these - _____________ is added in stainless steel to prevent inter crystal corrosion?
A. Vanadium
B. Niobium
C. Chromium
D. Nickel - Addition of lead, sulphur and phosphorus to low carbon steel helps in improving its__________________?
A. Corrosion resistance
B. Tensile strength
C. Machinability
D. Compressive strength - Addition of ______________ in steel is helpful in increasing the depth of hardness?
A. Chromium
B. Sulphur
C. Vanadium
D. Tungsten - Addition of 2% nickel in steel makes it suitable for making ___________________?
A. Electronic valves
B. Boiler plates, rivets etc.
C. Turbine blades
D. Connecting rod
