Calorising
Galvanising
Zincification
Tempering
✅ The correct answer is option B.
Materials and Construction MCQs
Presence of nickel in steel improves its
Corrosion resistance
Cutting ability
Wear resistance
All of the above
✅ The correct answer is option A.
Brass container is suitable for storing
Aqueous ammonia
Beer
H₂SO₄(95%)
Phosphoric acid (95%)
✅ The correct answer is option B.
__________ alloys have the highest specific strength of all the structural materials out of the following.
Magnetic steel
Titanium
Chromium
Magnesium
✅ The correct answer is option B.
Rotary driers are generally made of
Cast iron
Mild steel
High silicon iron (14% Si)
Tin lined with refractory bricks
✅ The correct answer is option B.
A material is able to retain the deformation permanently by virtue of its
Elasticity
Plasticity
Ductility
Malleability
✅ The correct answer is option B.
Presence of 0.3 to 0.5% arsenic in copper increases its
Ductility
Malleability
Tenacity & hardness
Electrical conductivity
✅ The correct answer is option C.
The ability of a material to absorb energy in the elastic range is a measure of its
Toughness
Resilience
Malleability
Brittleness
✅ The correct answer is option B.
Cast irons are generally specified by their
Carbon content
Tensile strength
Hardness
Manufacturing proces
✅ The correct answer is option B.
Metal at the top of the electromotive series is
Least active
Most stable
Most active
Most noble
✅ The correct answer is option C.