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A. Bacteria are used in preparing idli, dosa and curdling of milk.
B. Yeast is used in making only distilled alcoholic beverages.
C. In biological treatment of waste water only aerobic bacteria are used
The number of correct and incorrect statements are respectively
- a)3, 0
- b)1, 2
- c)2, 1
- d)0, 3
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
A. Bacteria are used in preparing idli, dosa and curdling of milk.B. ...
Bacteria and their uses:
1. Bacteria are used in preparing idli, dosa, and curdling of milk:
- This statement is correct. In the preparation of idli and dosa, a fermented batter is used. The fermentation process is carried out by bacteria, specifically lactic acid bacteria, such as Lactobacillus species. These bacteria convert the carbohydrates present in the batter into lactic acid, which helps in the fermentation process, giving idli and dosa their characteristic taste and texture. Similarly, when milk is curdled to make yogurt or cheese, bacteria like Lactobacillus or Streptococcus are used to convert lactose into lactic acid, which causes the milk to coagulate and form curds.
Yeast and its uses:
2. Yeast is used in making only distilled alcoholic beverages:
- This statement is incorrect. While yeast is commonly used in the production of distilled alcoholic beverages like whiskey, vodka, and rum, it is also used in the fermentation process of other alcoholic beverages such as beer and wine. Yeast, especially Saccharomyces cerevisiae, is responsible for the fermentation of sugars present in the ingredients of these beverages, converting them into alcohol and carbon dioxide.
Biological treatment of wastewater:
3. In the biological treatment of wastewater, only aerobic bacteria are used:
- This statement is incorrect. The biological treatment of wastewater involves the use of both aerobic and anaerobic bacteria. Aerobic bacteria require oxygen to survive and are responsible for the initial breakdown of organic matter in the wastewater. They convert organic compounds into simpler forms, such as carbon dioxide and water. On the other hand, anaerobic bacteria work in an oxygen-free environment and help further break down the organic matter, producing biogas (methane). Both aerobic and anaerobic bacteria play crucial roles in the treatment of wastewater, removing pollutants and reducing the organic load before the water is discharged.
Correct and incorrect statements:
- Correct statements: 2 (A and B)
- Incorrect statements: 1 (C)
Therefore, the correct answer is option 'B' - 1 correct and 2 incorrect statements.
1. Bacteria are used in preparing idli, dosa, and curdling of milk:
- This statement is correct. In the preparation of idli and dosa, a fermented batter is used. The fermentation process is carried out by bacteria, specifically lactic acid bacteria, such as Lactobacillus species. These bacteria convert the carbohydrates present in the batter into lactic acid, which helps in the fermentation process, giving idli and dosa their characteristic taste and texture. Similarly, when milk is curdled to make yogurt or cheese, bacteria like Lactobacillus or Streptococcus are used to convert lactose into lactic acid, which causes the milk to coagulate and form curds.
Yeast and its uses:
2. Yeast is used in making only distilled alcoholic beverages:
- This statement is incorrect. While yeast is commonly used in the production of distilled alcoholic beverages like whiskey, vodka, and rum, it is also used in the fermentation process of other alcoholic beverages such as beer and wine. Yeast, especially Saccharomyces cerevisiae, is responsible for the fermentation of sugars present in the ingredients of these beverages, converting them into alcohol and carbon dioxide.
Biological treatment of wastewater:
3. In the biological treatment of wastewater, only aerobic bacteria are used:
- This statement is incorrect. The biological treatment of wastewater involves the use of both aerobic and anaerobic bacteria. Aerobic bacteria require oxygen to survive and are responsible for the initial breakdown of organic matter in the wastewater. They convert organic compounds into simpler forms, such as carbon dioxide and water. On the other hand, anaerobic bacteria work in an oxygen-free environment and help further break down the organic matter, producing biogas (methane). Both aerobic and anaerobic bacteria play crucial roles in the treatment of wastewater, removing pollutants and reducing the organic load before the water is discharged.
Correct and incorrect statements:
- Correct statements: 2 (A and B)
- Incorrect statements: 1 (C)
Therefore, the correct answer is option 'B' - 1 correct and 2 incorrect statements.
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A. Bacteria are used in preparing idli, dosa and curdling of milk.B. ...
Yeast is used in bread making, alcoholic fermentation. In biological treatment of waste water, aerobic bacteria and fungal filaments are used.
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A. Bacteria are used in preparing idli, dosa and curdling of milk.B. Yeast is used in making only distilled alcoholic beverages.C. In biological treatment of waste water only aerobic bacteria are usedThe number of correct and incorrect statements are respectivelya)3, 0b)1, 2c)2, 1d)0, 3Correct answer is option 'B'. Can you explain this answer?
Question Description
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