1751. Zircalloy used as a fuel cladding material in a nuclear reactor (thermal) is an alloy of zirconium
Tin, nickel, iron and chromium
And graphite
And copper
None of these
✅ The correct answer is option A.
Chemical Engineering
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1752. Clock pendulums are usually made of __________ steel.
High speed
Stainless
Heat resisting
None of these
✅ The correct answer is option D.
1753. Acetaldehyde is produced by hydration of acetylene in a sulphuric acid solution of mercuric sulphate. Hydration tower is made of
Rubber lined mild steel
Lead lined mild steel
Aluminium
Cast iron
✅ The correct answer is option A.
1754. 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.
1756. Refined acetic acid storage vessel are made of
Copper
Aluminium
High carbon steel
Nickel
✅ The correct answer is option B.
1757. White metal is an alloy of
Lead, tin and cadmium
Copper, tin and zinc
Copper and lead
None of these
✅ The correct answer is option D.
1758. Which of the following is the hardest?
Cementite
Pearlite
Austenite
Ferrite
✅ The correct answer is option C.
1759. Which one has the maximum tensile strength out of the following?
Nodular cast iron
Pig iron
White cast iron
Grey cast iron
✅ The correct answer is option A.
1760. H₂SO₄ (< 50% concentration) is corrosive to
Aluminium, mild steel, stainless steel, concrete & tin
Copper, cast iron & high silicon iron (14% Si)
Rubber (butyl and hard), silicone rubber & teflon
Glass, graphite, porcelain & stoneware
✅ The correct answer is option A.