High speed
High carbon
Chrome
Silicon
✅ The correct answer is option C.
Materials and Construction MCQs
Addition of 2% nickel in steel makes it suitable for making
Electronic valves
Boiler plates, rivets etc
Turbine blades
Connecting rod
✅ The correct answer is option B.
Plastics are
Used in very high temperature applications
Non-biodegradable
Not suitable for drainage pipe manufacture
All of the above
✅ The correct answer is option B.
The formation of oxide film on a metal due to atmospheric exposure reduces its
Toughness
Stiffness
Creep limit
All of the above
✅ The correct answer is option C.
Bronze is an alloy of copper and
Lead
Tin
Nickel
Zinc
✅ The correct answer is option B.
Sulphur melting pit in the sulphuric acid plant is made of
Lead lined stainless steel
Cast iron
Steel or cement-brick lined
Hard wood
✅ The correct answer is option C.
Tin vessels are corroded by
Anhydrous ammonia
Aromatic solvents
Synthetic detergent solution
None of these
✅ The correct answer is option D.
Non-ferrous metals and hard steels do not exhibit a definite yield point, when pulled in the testing machine and hence for these cases, a better measure of their elastic properties is defined by the __________ stress.
Ultimate
Yield point
Proof
None of these
✅ The correct answer is option C.
Which one contains the least percentage of carbon?
Wrought iron
High speed steel
Cast iron
Pig iron
✅ The correct answer is option A.
Nitriding of steel is done (in electric furnace) at __________ °C.
510
1720
2210
910
✅ The correct answer is option A.