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- Question
Candida utilis is used for the fermentation of waste sulphate liquor since it ferments
Options- A. hexoses only
- B. pentoses only
- C. both hexoses and pentoses
- D. none of these
- Correct Answer
- both hexoses and pentoses
- 1. Ethanol is produced by
Options- A. continuous fermentation
- B. batch fermentation
- C. both (a) and (b)
- D. none of these Discuss
- 2. Which of the following organism is not used in any of the traditional industrial fermentation?
Options- A. E. coli
- B. Yeast
- C. Bacillus
- D. Pseudomonas Discuss
- 3. How is air supply to the fermentor sterilized?
Options- A. By heat filtration
- B. Filtration through fibrous material
- C. Filtration through granular material
- D. All of the above Discuss
- 4. The fermentor can be sterilized by
Options- A. keeping it in the oven
- B. steam under pressure
- C. boiling
- D. all of these Discuss
- 5. Yeast is used in the production of
Options- A. ethyl alcohol
- B. acetic acid
- C. cheese
- D. curd Discuss
- 6. Spirit vinegar is produced from
Options- A. fruit juices
- B. malted grain
- C. ethanol
- D. ale Discuss
- 7. For the recovery of citric acid after fermentation, Ca(OH)2 is added to the slurry to
Options- A. precipitate calcium carbonate
- B. precipitate calcium citrate
- C. precipitate calcium phosphate
- D. precipitate calcium sulphate Discuss
- 8. Ethanol is oxidized to acetic acid aerobically using
Options- A. Acetobacter
- B. Gluconobacter
- C. both (a) and (b)
- D. Lactobacillus Discuss
- 9. Vinegar production consists of
Options- A. aerobic fermentation
- B. anaerobic fermentation
- C. aerobic fermentation followed by anaerobic fermentation
- D. anaerobic fermentation followed by aerobic fermentation Discuss
- 10. In koji process for the fermentation to produce citric acid,
Options- A. A. niger is used with solid substrate as sweet potato
- B. A. niger floats on the surface of solution
- C. Fungal mycelium grows through out the solution in a deep tank
- D. both (a) and (b) Discuss
Ethanol Production problems
Search Results
Correct Answer: both (a) and (b)
Correct Answer: E. coli
Correct Answer: All of the above
Correct Answer: steam under pressure
Correct Answer: ethyl alcohol
Correct Answer: ethanol
Correct Answer: precipitate calcium citrate
Correct Answer: both (a) and (b)
Correct Answer: anaerobic fermentation followed by aerobic fermentation
Correct Answer: A. niger is used with solid substrate as sweet potato
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