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Chemical Engineering - Chemical Process

Exercise : Chemical Process - Section 7
26.
Essential oils are usually obtained using
steam distillation
extractive distillation
solvent extraction
leaching
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
Impurities present in brine is normally removed by treatment with
NH3 and CO2.
lime and soda ash.
lime, ammonia and carbon.
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
Hydrogenation of oil/fat does not
improve its resistance to rancid oxidation.
raise its melting point.
remove double bonds.
none of these.
Answer: Option
Explanation:
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29.
Solvay process as compared to dual process (i.e. modified Solvay process)
can use low grade brine.
has less corrosion problems.
involves higher investment in NH3 recovery units than that for crystallisation units for NH4Cl.
both (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
Builders are added in soap to act as
cleaning power booster
anti-redeposition agent
corrosion inhibitor
fabric brightener
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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