Die
Investment
Slush
True centrifugal
✅ The correct answer is option D.
Materials and Construction MCQs
Austenitic manganese steel used for making jaws of crushing machines contains about __________ percent manganese.
1.5-2
3.5-4.5
7-Sep
Dec-14
✅ The correct answer is option D.
A material is called ‘ductile’, if it can be
Drawn into wires
Hammered to a thin sheet
Fractured without deformation
Made lustrous by heating it
✅ The correct answer is option A.
Stainless steel contains
Chromium and nickel
Copper
Aluminium
Vanadium
✅ The correct answer is option A.
__________ of a material results, when its strength is increased & ductility is decreased by heating at a relatively lower temperature after cold working.
Solid solution hardening
Screw dislocation
Strain ageing
Twinning
✅ The correct answer is option C.
Reduction in the grain size reduces the __________ of the material.
Fatigue resistance
Tensile strength
Creep resistance
All of the above
✅ The correct answer is option C.
SO₃ is absorbed using H₂SO₄ in a
Cast iron packed tower
Stainless steel plate tower
Packed steel tower lined with acid proof bricks
None of these
✅ The correct answer is option C.
Hardest materials so far found is
Diamond
Graphite
Carborundum
Pumice stone
✅ The correct answer is option A.
Steel rods are used in reinforced concrete to increase its __________ strength.
Shear
Tensile
Compressive
None of these
✅ The correct answer is option B.
Corrosion resisting properties of cast iron are significantly improved by the addition of 12 – 15% of
Tungsten
Vanadium
Silicon
All of the above
✅ The correct answer is option C.