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Chemical Engineering - Chemical Process

Exercise : Chemical Process - Section 8
46.
Carbon disulphide is mainly used in the production of
viscose rayon.
corundum.
plasticiser for unsaturated polyester.
paints.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
99.5% purity oxygen is used in
cutting and welding by oxy-acetylene flame.
hospitals for medicinal purposes.
gas masks and artificial breathing apparatus.
all (a), (b), and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
Nylon-6 is manufactured from
caprolactum.
hexamethylene diamine and adipic acid.
hexamethylene diamine and maleic anhydride.
hexamethylene diamine and sebacic acid.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
Permanent hardness of water can be removed by
boiling.
adding Ca(OH)2.
boiling it with Na2CO3.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
Sizing material is incorporated in paper to
impart resistance to penetration by liquids.
increase its thickness.
increase its flexibility & opacity.
increase its brightness.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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