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Chemical Engineering - Materials and Construction

Exercise : Materials and Construction - Section 1
11.
The main purpose of galvanising iron sheets is to
harden the surface.
increase its glossiness and lustre.
prevent the action of water.
prevent the action of oxygen.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
The impure iron (pig iron) that is tapped out from blast furnace contains about __________ percent carbon.
0.2
2
4
8
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
Invar used in thermocouples is an alloy of nickel and
iron
copper
chromium
lead
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
Nickel (56%) and molybdenum (17%) alloys are called
monel
hastealloy C
inconel
bronzes
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
Lead pipes are not safe for carrying drinking water because water containing dissolved oxygen attacks lead thereby forming poisonous Pb (OH)2. Lead pipes are readily corroded by
dilute HCI
acetic acid
concentrated H2SO4
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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