Low carbon steel
Mild steel
Wrought iron
White cast iron
✅ The correct answer is option C.
Materials and Construction MCQs
Babbit metal (used for making bearings) comprises of
Mainly tin (85%) and lead
Saw dust and iron dust mixture
Zinc and aluminium
Copper and aluminium
✅ The correct answer is option A.
For handling sulphuric acid of 95% strength, the suitable material of construction for pipes is
Stainless steel
Cast iron
Aluminium
Nickel
✅ The correct answer is option B.
__________ is a donor impurity for semi-conductors.
Boron
Antimony
Gallium
None of these
✅ The correct answer is option B.
Gas holder of a gobar (cowdung) gas plant is made of
Molybdenum stainless steel
Tin
Mild steel
Aluminium
✅ The correct answer is option C.
Pick the odd man out of the following.
Calorising
Pack carburising
Nitriding
Cyaniding
✅ The correct answer is option A.
18/8 stainless steel means, that it contains
18% chromium and 8% nickel
18% chromium and 8% molybdenum
18% nickel and 8% chromium
18% molybdenum and 8% chromium
✅ The correct answer is option A.
Cermets are used for making
Cutting tools
Abrasives
Both A & B
Neither A nor B
✅ The correct answer is option C.
Sulphuric acid pickling tanks are lined with
Nickel
Rubber
Aluminium
Glass
✅ The correct answer is option B.
High resistance electrical heating elements/wire are not made of
Marageing steel
Nimonic alloys
Kanthal wire
Nichrome
✅ The correct answer is option A.