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Chemical Engineering - Materials and Construction

Exercise : Materials and Construction - Section 6
11.
Carbon is present in the combined form (carbide) in case of
pig iron
steel
ferroalloys
all (a), (b) & (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
Chilled iron castings are
easily machinable
soft on surface
highly wear resistant
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
A hardness depth of about 3 mm can be achieved by induction hardness in __________ seconds.
5
100
250
500
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
Presence of nitrogen in steel
makes it brittle.
increases its strength.
increases its hardness.
is desirable.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
Very high sulphur in pig iron makes
its casting unsound.
its hard and machinable.
its brittle and malleable.
all (a), (b) & (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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