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Microbes: Household Products, Industrial Products and Sewage Treatment, Class 12 Biology NCERT Solutions

1. There will be total 10  MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying.

1. The term antibiotic was first used by
 
 
 
 

Question 1 of 10

2. Lactic acid bacteria (LAB) grow in milk and convert it to curd and also improve its nutritional quality by increasing
 
 
 
 

Question 2 of 10

3. Methanogens growing anaerobically on cellulosic material produce
 
 
 
 

Question 3 of 10

4. Maximum number of antibiotics are got from any group except for
 
 
 
 

Question 4 of 10

5. Identify the fungus with medicinal importance.
 
 
 
 

Question 5 of 10

6. Which one of the following microbes is used in the commercial production of ethanol?
 
 
 
 

Question 6 of 10

7. A sewage treatment process in which a part of the decomposer bacteria present in the wastes are recycled into the starting of the process is called
 
 
 
 

Question 7 of 10

8. Probiotics are
 
 
 
 

Question 8 of 10

9. Lactic acid is formed by the process of
 
 
 
 

Question 9 of 10

10. Rennin used in the cheese industry is
 
 
 
 

Question 10 of 10


 

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