Separation Processes Questions and Answers – Extraction of Bioproducts

This set of Separation Processes Multiple Choice Questions & Answers (MCQs) focuses on “Extraction of Bioproducts”.

1. Which of the following is not a commonly used solvent?
a) Acetone
b) Hexane
c) Iso-butyl keton
d) Acetaldehyde
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2. The cost of solvent extraction is how many times more than distillation?
a) 20
b) 30
c) 50
d) 60
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3. How can the partition coefficient be increased?
a) By increasing the feed
b) By decreasing the feed
c) By changing pH
d) By increasing chemical potential
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4. Because partition coefficients of some solvents are unfavorably low _______ has received much attention.
a) Extractive reaction
b) Reactive extraction
c) Distillation
d) Fractional distillation
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5. What can be used to enhance the extraction of polar zwitter ions?
a) Hydrogen bonding
b) Acid-base pairing
c) Formation of ion pair
d) Addition of surfactant
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6. How is the organic partitioning of a cation or an anion enhanced?
a) Hydrogen bonding
b) Acid-base pairing
c) Formation of ion pair
d) Addition of surfactant
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7. How can competitive water and mineral salts be removed?
a) Hydrogen bonding
b) Acid-base pairing
c) Formation of ion pair
d) Addition of surfactant
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8. What effect does increasing temperature have on KD?
a) Increases
b) Decreases
c) First increases then decreases
d) First decreases then increases
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9. What happens after critical micelle concentration CMC?
a) Micelles stop forming
b) Micelles cannot form
c) Micelles start forming
d) Solubility is maximum
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10. How are reverse micelles formed?
a) By adding surfactant
b) By removing surfactant
c) By adding solvent
d) By removing solvent
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Sanfoundry Global Education & Learning Series – Separation Processes.

To practice all areas of Separation Processes, here is complete set of 1000+ Multiple Choice Questions and Answers.