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Chemical Engineering - Chemical Engineering Basics

Exercise : Chemical Engineering Basics - Section 22
11.
Which of the following is not an ore of zinc?
Cerrusite
Franklinite
Calamine
Troosite
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
Pressure gauges are never connected directly to the live steam line; rather a loop or syphon is interposed as close as possible to the pressure gauge. This is done to
avoid the overheating of the tubes & bellows which operate them to minimise error and damage.
form a seal of water by steam condensate to fill the tube or bellows at the pressure being measured.
both 'a' & 'b'.
avoid the static head error introduced by steam entry.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
Phosphorous is added to copper melt to
remove hydrogen.
deoxidise the metal.
improve fluidity.
reduce shrinkage.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
Which of the following is not a suitable solid lubricant ?
Talc
Molybdenum disulphide
Graphite
None of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
On an average __________ fast neutrons are produced by nuclear fission of each atom of uranium-235.
1
2.5
3.5
5
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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