1717. Carbon is present in the uncombined (graphitic) form in case of
Cast iron
Steel
Ferroalloy
None of these
✅ The correct answer is option A.
1720. Caustic soda is transported in __________ lined containers.
Glass
Nickel
Neoprene
Either B or C
✅ The correct answer is option D.
1723. A chemical change takes place when iron
Rusts
Melts
Is heated
None of these
✅ The correct answer is option A.
1726. The preferred material of construction for storage tanks for 98% sulphuric acid is
Aluminium
Lead
Stainless steel 316
Mild steel
✅ The correct answer is option B.
1729. High degree of toughness is a must for
High speed steel
Shock resisting steel
Cold work tool steel
None of these
✅ The correct answer is option B.
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.
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.
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.
1698. Molybdenum steels containing 0.15 to 0.40% molybdenum
Are prone to temper brittleness
Are used for automobile parts like gears, axle, shaft, bearings etc
Have very poor fatigue resistance
Do not contain nickel or chromium or both
✅ The correct answer is option B.
1700. Addition of __________ in steel can help in increasing the depth of hardness.
Nickel
Chromium
Vanadium
Tungsten
✅ The correct answer is option D.