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Chemical Engineering - Chemical Process

Exercise : Chemical Process - Section 5
46.
Viscosity index improver (like polystrene or polyisobutylene) is added to lubricant to
reduce its viscosity.
increase its viscosity.
reduce the variation in its viscosity with temperature.
increase the variation in its viscosity with temperature.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
Pick out the wrong statement pertaining to solvent extraction of oil.Rate of extraction
decreases with decrease of thickness of the flakes.
increases with the increasing flake size keeping the flake thickness constant.
increases Considerably with the rise of temperature.
decreases as the moisture content of flakes increases.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
Sea weeds are an important source of
fluorine
chlorine
bromine
iodine
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
Polythene is a/an __________ polymerisation product.
addition
condensation
thermosetting
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
Catalytic oxidation-dehydrogenation of methyl alcohol produces
formaldehyde
phenol
acetone
maleic anhydride
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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