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Chemical Engineering - Materials and Construction

Exercise : Materials and Construction - Section 10
11.
Lead pipes are not safe for carraying drinking water, because water, containing dissolved oxygen attacks lead thereby forming poisonous Pb(OH)2. Lead pipes are readily corroded by
dilute HC1
acetic acid
concentrated H2SO4
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
An alloy of iron containing 4% carbon is called
high carbon steel
wrought iron
mild steel
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
Steel pipes are normally manufactured by __________ process.
extrusion
cold working
forging
electroforming
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
Polymorphism is not exhibited by
carbon
iron
phosphorous
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
Rubber lined vessels are corroded by the action of
aqua regia
chloroform
sulphuric acid (95%)
all (a), (b) and (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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