Low carbon
Medium carbon
High carbon
High alloy
✅ The correct answer is option A.
Materials and Construction MCQs
Stainless steel is not corroded by
Hydrochloric acid (10%)
Nitric acid (10%)
Sulphuric acid (10%)
Saturated brine
✅ The correct answer is option B.
The hardest material just prior to diamond in Mho’s scale is
Topax
Carborundum
Corrundum
Calcite
✅ The correct answer is option C.
Which of the following commercial metals is most abundantly found in India?
Copper
Aluminium
Nickel
Zinc
✅ The correct answer is option B.
Super conductors are those substances, which
Offer no resistance to current flow
Conduct electricity at low temperature
Offer high resistance to current flow
Conduct electricity at high temperature
✅ The correct answer is option A.
Rotary kilns in cement industry are lined with____bricks.
Fireclay
Silica
Lead
High alumina & high magnesia
✅ The correct answer is option D.
Silicone rubber is not resistant to the corrosive action of
Sulphuric acid (10%)
Sulphuric acid (95%)
Ether
Both B and C
✅ The correct answer is option D.
Which of the following has the highest density and the lowest melting point?
Stainless steel
Titanium
Lead
Aluminium
✅ The correct answer is option C.
When iron is rusted, it is
Converted to a fine powder
Reduced
Oxidised
None of these
✅ The correct answer is option C.
Vessels made of __________ can be used to store dry chlorine.
Thermoplastic materials
Nickel
Steel or iron
None of these
✅ The correct answer is option C.