Microbes in Industrial Products - Fermented Beverages - Unsolved Practice Set
Chapter: Microbes in Human Welfare | Topic: Microbes in Industrial Products Fermented Beverages
MICROBES IN INDUSTRIAL PRODUCTS - FERMENTED BEVERAGES - UNSOLVED PRACTICE SET
Topic: Microbes in Industrial Products Fermented Beverages
Multiple Choice Questions
Q1. Industrial fermentation for producing alcoholic beverages primarily relies on:
- Bacteria only
- Yeast, which ferments sugars to produce ethanol
- Fungi that cause disease
- Viruses
Q2. Wine is typically produced through the fermentation of:
- Malted barley
- Fruit juices, especially grape juice
- Milk
- Wheat flour only
Q3. Beer is typically produced through the fermentation of:
- Malted cereals (such as barley)
- Fruit juices only
- Milk products
- Vegetable oils
Q4. Distilled alcoholic beverages, such as whisky and brandy, differ from beverages like beer and wine mainly because they undergo:
- No fermentation at all
- An additional distillation step after fermentation to increase alcohol concentration
- Pasteurisation only
- No microbial involvement
Q5. The large vessels used for carrying out industrial-scale microbial fermentation are called:
- Petri dishes
- Fermenters
- Test tubes
- Autoclaves
Short Answer Questions
Q6. Name the microorganism primarily responsible for alcoholic fermentation in the production of beverages like beer and wine.
Q7. Differentiate between the raw materials typically used to produce beer and those used to produce wine.
Q8. What is a fermenter, and why is it important in industrial-scale beverage production?
Q9. Briefly explain the key difference between fermented and distilled alcoholic beverages.
Long Answer Questions
Q10. Describe the general process of industrial fermentation used in the production of alcoholic beverages, explaining the role of yeast and the raw materials involved.
Q11. Discuss the difference between fermented beverages (like beer and wine) and distilled beverages (like whisky and brandy), explaining how the production process differs between the two categories.
APPLICATION / ANALYSIS
Q12. A brewery uses malted barley as its raw material and relies on yeast fermentation to produce beer, while a winery uses grape juice for the same basic fermentation process to produce wine. Explain why the choice of raw material, despite using the same type of microorganism, leads to two very different beverages.
Q13. A distillery further processes fermented grain mash through a distillation step to produce whisky with a much higher alcohol content than the original fermented product. Explain, using your understanding of distillation, why this additional step increases the alcohol concentration of the final beverage.