51. Combination of high temperature during processing, low temperature during storage and increasing the acidity for prevention of food contamination is known as A. Stumbling technology B. Mixed preservation approach C. High pressure food preservation D. Hurdle technology 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
52. If the pulse input response curve for a CSTR shows a long tail, it means A. Strong internal circulation in the reactor B. Dead space in the reactor C. Short circulating in the reactor D. Parallel flow in the reactor 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
53. Bottom yeasts ferment the sugars at A. 6° - 12°C B. 12° - 15°C C. 5° - 8°C D. 4° - 9°C 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
54. The application of the principles of process technology to biological systems is called A. Bioleaching B. Bioprocess technology C. Bioreactors or fermentors D. Food processing 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
55. Beer is a product of A. Fermentation of barley grains by yeasts B. Fermentation of fruits C. Fermentation brought about by molds D. Fermentation of hops 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
56. Production of citric acid is inhibited by A. Sodium azide B. Thioglycolate C. Sodium cyanide 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
57. The media for large scale industrial fermentation process usually A. Use highly purified carbon sources B. Consist of waste products from other processes, such as grain milling C. Do not require a nitrogen source because the atmosphere provides nitrogen D. All the above 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
58. In a batch reactor, which one of the following is true regarding specific growth rate? A. It remains constant with time B. It continuously increases with time C. It continuously decreases with time D. It reache s a maximum in the exponential phase 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
59. The toxicity of weak organic acids to microbial cells A. Enhances as the pH falls B. Decreases as the pH falls C. Is not affected by pH D. Is highest at pH 7.0 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
60. In a chemostat, which one of the following would increase the exit cell concentration A. Increase in inlet substrate concentration B. Increase in dilution rate C. Increase in inoculum size D. Increase in impeller size 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
