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Chemical Engineering - Materials and Construction

Exercise : Materials and Construction - Section 8
21.
Graphite is a good
thermal & electrical insulator.
conductor of heat.
conductor of electricity.
both (b) & (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
Lead alone is not used in storing equipment, because it
is very costly.
corrodes easily.
is having low creep strength.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
H2SO4 (< 50% concentration) is corrosive to
aluminium, mild steel, stainless steel, concrete & tin.
copper, cast iron & high silicon iron (14% Si).
rubber (butyl and hard), silicone rubber & teflon.
glass, graphite, porcelain & stoneware.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
In the Kraft process of sulphate paper pulp manufacture, the black liquor and the white liquor storage tank is made of
concrete
wood
steel
porcelain
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
A bearing metal should not have
enough plasticity.
low thermal conductivity.
low co-efficient of friction.
high toughness.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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