1731. Which of the following alloying elements is present in maximum percentage in high speed steel.
Molybdenum
Chromium
Tungsten
Vanadium
✅ The correct answer is option C.
Chemical Engineering
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1732. A measure of toughness of a material is its
Percentage elongation
Yield strength
Ultimate strength
Area under stress-strain diagram
✅ The correct answer is option B.
1733. Cast iron is a __________ material.
Brittle
Ductile
Tough
Malleable
✅ The correct answer is option A.
1734. The heat treatment process to which castings and the steel balls produced by cold heading are subjected is
Tempering
Normalising
Annealing
None of these
✅ The correct answer is option B.
1735. How many atoms are there per unit cell in a body centred cubic lattice system?
2
3
4
6
✅ The correct answer is option A.
1736. Phenol is not shipped in
Nickel lined steel tank cars
Galvanised or tin lined drums
Boxed glass carboys
Cast iron containers
✅ The correct answer is option D.
1737. Water gas generator is made of
Carbon steel-brick lined
Stainless steel-lead lined
Cast iron
High carbon steel-procelain lined
✅ The correct answer is option A.
1738. Which of the following finds the least commercial use?
Pure iron
High silicon iron
Low carbon steel
High carbon steel
✅ The correct answer is option A.
1739. Purity of electrical grade aluminium should be ≥ __________ percent.
95
99.5
85
90
✅ The correct answer is option B.
1740. Ball bearings are generally made of
Plain carbon steel
Chrome carbon steel
Stainless steel
Malleable cast iron
✅ The correct answer is option B.