Silicon steel
Chromium steel
Molybdenum steel
None of these
✅ The correct answer is option A.
Materials and Construction MCQs
__________ iron is produced, when molten pig iron is allowed to cool gradually.
White cast
Grey cast
Wrought
None of these
✅ The correct answer is option B.
The material used in the filament of electric bulbs is
Nichrome
Tungsten
Constantan
German silver
✅ The correct answer is option B.
An alloy used as thermocouple material comprises of 40% nickel and 60% copper. It is called
Constantan
Kanthal
Chromel
German silver
✅ The correct answer is option A.
The addition of antimony in tin-based alloys improves its
Rupture strength and hot hardness
Impact strength and bonding strength
Deformation resistance
Wear resistance
✅ The correct answer is option C.
A suitable material of construction to use with fuming sulphuric acid is
Carbon steel
Stainless steel type 304
Nickel
Monel
✅ The correct answer is option D.
Which of the following is produced by condensation polymerisation?
Bakelite
Polythene
Poly vinyl chloride
Polystyrene
✅ The correct answer is option A.
Coke oven walls are lined with __________ bricks.
Silica
Tar-dolomite
Low thermal conductivity
Fire clay
✅ The correct answer is option A.
Nickel and copper are the basic constituents of
Hastelloy
Monel metal
German silver
Inconel
✅ The correct answer is option B.
The softest material just next to talc in the Mho’s scale is
Quartz
Gypsum
Feldspar
Fluorite
✅ The correct answer is option B.