10

Class 12 Biology - Chapter 10: Microbes in Human Welfare MCQ Questions

15 Questions 30 Minutes
Answered: 0 / 15Unanswered: 15

Your Class 12 Biology Study Path

  1. 1LearnNCERT Solutions
  2. 2PracticeChapter MCQs
  3. 3TestChapter Test
  4. 4PrepareSample Papers
  5. 5Exam PracticePrevious-Year Papers
  6. 6Final CheckMock Test
Question 1

The primary treatment of waste water involves the removal of:

Question 2

Big holes in Swiss cheese are made by a:

Question 3

The free-living fungus Trichoderma can be used for:

Question 4

Activated sludge should have the ability to settle quickly so that it can:

Question 5

The technology of biogas production from cow dung was developed in India largely due to the efforts of:

Question 6

Which one of the following is not a nitrogen-fixing organism?

Question 7

The vitamin whose content increases following the conversion of milk into curd by lactic acid bacteria is:

Question 8

Methanogens do not produce:

Question 9

Waste water treatment generates a large quantity of sludge, which can be treated by:

Question 10

The residue left after methane production from cattle dung is:

Question 11

Methanogenic bacteria are not found in:

Question 12

What would happen if oxygen availability to activated sludge floes is reduced?

Question 13

Which one of the following alcoholic drinks is produced without distillation?

Question 14

BOD of waste water is estimated by measuring the amount of:

Question 15

Mycorrhiza does not help the host plant in:

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