Wood
Stainless steel
Reinforced concrete lined with lead
High silicon iron (14% Si)
✅ The correct answer is option C.
Materials and Construction MCQs
Lead alone is not used in storing equipment, because it
Is very costly
Corrodes easily
Is having low creep strength
None of these
✅ The correct answer is option C.
Approximate value of the modulus of elasticity for steel is about __________ x l0⁶kg/cm².
0.5
2
40
75
✅ The correct answer is option B.
Maximum consumption of lead is in the manufacture of
Storage batteries
Solder alloys
Electric cable sheathing
Lead lined vessels
✅ The correct answer is option A.
Presence of even 0.005% of __________ in copper makes it highly brittle, rendering it useless for wire-drawing.
Oxygen
Arsenic
Antimony
Bismuth
✅ The correct answer is option D.
Presence of even very minute amount (say 0.1%) of __________ in copper, reduces its electrical conductivity very seriously.
Bismuth
Arsenic
Antimony
Both B and C
✅ The correct answer is option D.
Brinell Hardness Number (BHN) for talc is approximately in the range of
1-May
20-30
100 -150
200 – 250
✅ The correct answer is option B.
Amount of energy that a material can absorb before its fracture is a measure of its
Toughness
Resilience
Malleability
Ductility
✅ The correct answer is option A.
Corrosion resistance of steel is increased by the addition of
Phosphorous and tungsten
Nickel and chromium
Lead and vanadium
Molybdenum and tungsten
✅ The correct answer is option B.
Out of the following, copper vessels are the most suitable for the storage of
Bromine
Dry chlorine & dry fluorine
Nitric acid (95% and fuming)
Phosphoric acid (95%) & sulphuric acid (95% and fuming)
✅ The correct answer is option B.