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Chemical Engineering - Materials and Construction

Exercise : Materials and Construction - Section 3
21.
Carbon is present in steel wholly in the
combined form.
free state as graphite.
both (a) and (b).
neither (a) nor (b).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
Carbon supply in pack carburising process is in the form of
charcoal
calcium carbide
hydrocarbon oil
graphite
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
In SO3 absorber (Contact Process), packing material used is of
cast iron
chemical stoneware
karbate
mild steel
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
Presence of manganese in alloy steel improves its
corrosion resistance.
cutting ability.
abrasion resistance & toughness.
elasticity & creep resistance.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
Sulphuric acid is mixed with ground phosphate rock (to produce phosphoric acid) in a steel digestor lined with
acidic refractory
rubber
karbate
lead or acid-proof bricks
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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