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Chemical Engineering - Materials and Construction

Exercise : Materials and Construction - Section 7
46.
Aluminium alloy is one of the most suitable materials of construction for aircrafts mainly due to its
high strength to weight ratio.
low temperature strength properties.
its ability to be cast, rolled, forged & stamped.
high strength and corrosion & oxidation-resistance at elevated temperature.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
Babbit metal used for making bearings should have
high-co-efficient of friction between journal and bearing.
ability to retain lubricant on its surface.
low co-efficient of friction between journal and bearing.
both(b) & (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
Vessels made of __________ can be used to store dry chlorine.
thermoplastic materials
nickel
steel or iron
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
For spinning viscose rayon, the extrusion spinnerettes are made of
platinum or gold alloys
high carbon steel
aluminium
nickel
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
Alpha iron is stable __________ °C.
above 1403
upto 910
above 1800
between 910 & 1403
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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