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Chemical Engineering - Chemical Engineering Basics

Exercise : Chemical Engineering Basics - Section 24
31.
The noble metals
are exemplified by Na, K and Li.
do not resist corrosion very strongly.
are the lowermost in the electro-chemical series of metals.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
Which of the following is an example of cathodic protection of metals against corrosion ?
Painted steel
Galvanised iron
Case hardened steel
Lead lined reactor
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
Thermal efficiency of an internal combustion engine is around __________ percent.
8
35
65
80
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
Pick out the correct combination about the role of various additives used in polymers.
Plasticiser : increases the polymer strength.
Heat stabiliser : increases the maximum service temperature.
Fillers: Does not affect the property of polymer but increases its weight.
Lubricants: increases the flexibility of polymers.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
The lightest non-inflammable gas is
H2
He
Ar
O2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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