Manganese
Carbon
Phosphorous
Silicon
✅ The correct answer is option B.
Materials and Construction MCQs
Slow and progressive deformation of a material with time under constant stress is called
Creep
Erosion
Resilience
None of these
✅ The correct answer is option A.
The crystal structure of most of the common metals is
Orthorhombic
Cubic
Hexagonal
None of these
✅ The correct answer is option B.
Ability of a material to absorb energy in deformation in the plastic range is characterised as its
Ductility
Toughness
Creep
Resilience
✅ The correct answer is option B.
Aluminium as a material of construction suffers from the disadvantage of
Very high cost
Rather low tensile strength
Very low strength to weight ratio
Scarce availability
✅ The correct answer is option B.
Hastelloy C is a good material of construction in chemical process industry, since it is
Highly corrosion resistant and is readily fabricated
Relatively inexpensive although it can be fabricated with some difficulty
Corrosion resistant to most alkalis, particularly because of its coper content
Light and resists attack by acids
✅ The correct answer is option D.
Lead pipe is
Especially resistant to solutions containing H₂SO₄
Usually joined by burning (e.g. by melting to adjacent pieces with a torch)
Having very low elastic limit resulting in permanent deformation from either mechanical or thermal strain
All of the above
✅ The correct answer is option D.
Constantan is an alloy of
Cu (55%) & Sn (45%)
Cu (55%) & Ni (45%)
Pt (95%) & Rh (10%)
Fe (80%) & Ni (20%)
✅ The correct answer is option B.
An elastic behaviour of materials is expressed in terms of
Hysterisis loop area
Stress-strain curve
Relaxation time
None of these
✅ The correct answer is option C.
Which of the following materials may prove unsuitable for handling acetic acid (glacial & anhydrous) at 40°C?
Silicone rubber, teflon, procelain and wood
Nickel, monel, stainless steel and graphite
Aluminium, copper, high silicon iron
Brass, cast iron, mild steel and tin
✅ The correct answer is option D.