A. Platinum or gold alloys
B. High carbon steel
C. Aluminium
D. Nickel
Related Mcqs:
- Cast iron is having very high ___________________?
A. Proximity between its elastic limit and ultimate breaking strength
B. Ductility
C. Tensile strength
D. All A., B. and C. - Hastelloy C is a good material of construction in chemical process industry, since it is ___________________?
A. Highly corrosion resistant and is readily fabricated
B. Relatively inexpensive although it can be fabricated with some difficulty
C. Corrosion resistant to most alkalis, particularly because of its copper content
D. Light and resists attack by acids - Very high sulphur in pig iron makes ___________________?
A. Its casting unsound
B. Its hard and machinable
C. Its brittle and malleable
D. All A., B. & C. - Carbon content in steel is ___________________ percent?
A. 0.1-2
B. 4-6
C. 2-4
D. 0.001-0.01 - The main constituent of carborundum is ___________________ carbide?
A. Calcium
B. Silicon
C. Boron
D. Aluminium - 100% H2SO4 at 30°C can’t be stored in a vessel made/lined with ___________________?
A. Cast iron and high silicon iron
B. Mild steel and stainless steel
C. Aluminium, tin and rubber
D. Teflon, glass and porcelain - Mild steel is ___________________?
A. A low carbon steel (0.05 to 0.3% carbon)
B. Highly resistant to corrosion (as much as stainless steel)
C. A high carbon steel (0.5 to 1.5% carbon)
D. Very poor in strength & ductility - 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 - Silico-manganese steels (containing 0.7% Mn, 0.5% C and 2% Si)___________________?
A. Do not require heat treatment for any of its applications
B. Are used for leaf and coiled springs
C. Do not have good resilience properties
D. Is tempered at 850°C - Presence of nickel in steel improves its_________________?
A. Corrosion resistance
B. Cutting ability
C. Wear resistance
D. All A., B. and C.