21. In alcoholic fermentation, CO2 is evolved during A. Decarboxylation of pyruvic acid B. Formation of acetaldehyde C. Oxidation of acetaldehyde D. Both A and B Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
22. During alcohol production, higher concentration of ethanol causes A. Reduction of yeast growth rate B. Increment of yeast growth rate C. No effect on yeast growth rate D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
23. Industrial microbiological processes have been developed by using the strains of which of the following group(s) of microbes? A. Algae and Protozoa B. Fungi (yeasts and molds) C. Bacteria D. All the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
24. Phosphatase test is used to indicate the proper pasteurization of A. Orange juice B. Beer C. Milk D. Wine Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
25. The fermentable liquid for brewing is prepared by a process called A. Mashing B. Clarification C. Wort preparation D. Roasting Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
26. The fastest route of NADH re-oxidation is A. Aerobic respiration B. Anaerobic respiration C. Fermentation D. Decomposition Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
27. The most striking example of chemical transformation possible largely through microbes only is A. Carbohydrate biotransformation B. Steroid biotransformation C. Protein biotransformation D. Glycerol biotransformation Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
28. The major drawback in using type Saccharomyces cerevisiae for producing ethanol from biomass hydrolysis is A. Low biomass yield of hexose sugars B. Presence of solid residues C. Low concentration of sugars D. Non utilization of pentose sugars Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
29. In a batch microbial fermentation process the dissolved oxygen concentration (DOC) remains almost zero during growth. Which of the following methods will you use for the estimation of oxygen? A. Static gassing out method B. Dynamic gassing out method C. Oxygen balance method D. Sulphide oxidation method Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
30. Molasses is mainly comprised of A. Sucrose B. Reducing sugar C. Hemicelluloses D. Starch Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
