Rubber lined mild steel
Lead lined mild steel
Aluminium
Cast iron
✅ The correct answer is option A.
Engineering MCQs
In the kraft (sulphate) process for the paper manufacture, the digestor is made of
Cast iron
Stainless steel
Karbate carbon
Wrought iron
✅ The correct answer is option B.
Biological shield in a nuclear power reactor is made of
Concrete
Steel
Cadmium
Zircalloy
✅ The correct answer is option A.
Galvanising (i.e., zinc coating) of steel sheets is done to
Prevent its rusting by contact with corrosive atmosphere
Protect the base metal by cathodic protection
Both A & B
Neither A nor B
✅ The correct answer is option C.
Steel balls for ball bearings are generally made of __________ steel.
Cast
Stainless
Free carbon
Carbon chrome
✅ The correct answer is option D.
Which of the following will have the highest melting point?
Pig iron
Mild steel
Wrought iron
High carbon steel
✅ The correct answer is option C.
__________ moulding process can not be used for thermoplastic plastics.
Compression
Extrusion
Injection
None of these
✅ The correct answer is option C.
Nickel is a __________ material.
Ferromagnetic
Diamagnetic
Paramagnetic
None of these
✅ The correct answer is option A.
Cast iron vessels are not suitable for the storage of
Freon
H₂SO₄ (95%) at room temperature
H₂SO₄ (fuming)
Wet SO₂
✅ The correct answer is option D.
Mercury is transported in metal containers made of
Aluminium
Iron
Lead
Nickel
✅ The correct answer is option B.