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Chemical Engineering - Materials and Construction

Exercise : Materials and Construction - Section 8
36.
Pick out the wrong statement.
Tin can be readily and very easily drawn into very fine wire.
Tin can be severely cold worked without the necessity of annealing due to its low recrystallisation temperature.
Tin exists in two allotropic forms.
The predominant use of tin is in the form of coating for steel & copper alloys.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
Thermometer bulb & capillary in case of mercury filled pressure spring expansion thermometer is normally made of __________ as mercury does not amalgamate with it.
copper
copper alloys
stainless steel
monel
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
Presence of silicon in steel
is in the form of free Si.
indicates that steel is not deoxidised properly.
decreases the blow holes formation tendency in castings.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
Pick the odd man out of the following.
Calorising
Pack carburising
Nitriding
Cyaniding
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
Cold work tool steel should have
high toughness
poor hardenability
high wear resistance
all (a), (b) & (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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