If you are preparing for CBSE Class 12 Board Exam Term 1 which will be an objective type questions paper, then you need to practice multiple choice questions of Class 12 Biology Chapterwise. In this article of AKVTutorials, you will get MCQ Questions for Class 12 Biology Chapter 10 Microbes in Human Welfare with Answer Keys
MCQ Questions for Class 12 Biology Chapter 10 Question No 1:
Which of the following is mainly produced by the activity of aerobic bacteria on sewage
Option A : Propane
Option B : Laughing gas
Option C : March gas
Option D : Mustard gas
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Option C : March gas
MCQ Questions for Class 12 Biology Chapter 10 Question No 2:
Select the correct statement from the following
Option A : Methanobacterium ia an aerobic found in rumen of cattle
Option B : Biogas commanly called gobar gas in pure methane
Option C : Activated sludge sediment is dettlement tanks of sewage treatment plant is rich source aerobic bacteria
Option D : Biogas is produced by the activity of aerobic bacteria on animal waste
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Option C : Activated sludge sediment is dettlement tanks of sewage treatment plant is rich sourece aerobic bacteria
MCQ Questions for Class 12 Biology Chapter 10 Question No 3:
Secondary sewage treatment is mainly a
Option A : Biological process
Option B : Chemical process
Option C : Mechanical process
Option D : Physical process
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Option A : Biological process
MCQ Questions for Class 12 Biology Chapter 10 Question No 4:
Penicillin was discovered by
Option A : Fleming
Option B : Waksman
Option C : Burkholder
Option D : Dubois
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Option A : Fleming
MCQ Questions for Class 12 Biology Chapter 10 Question No 5:
Vinegar is prepared from alcohal with the help of
Option A : Lactobacilus
Option B : Acetobacter
Option C : Azotobacter
Option D : Rhizobium
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Option B : Acetobacter
MCQ Questions for Class 12 Biology Chapter 10 Question No 6:
Yield of Paddy field can be increased by application of
Option A : Iron bacteria
Option B : Nostoc/ Anabaena
Option C : Carbon dioxide
Option D : Methane
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Option B : Nostoc/ Anabaena
MCQ Questions for Class 12 Biology Chapter 10 Question No 7:
In gobar gas, the maximum amount is that of
Option A : Butane
Option B : Propane
Option C : Carbon dioxide
Option D : Methane
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Option D : Methane
MCQ Questions for Class 12 Biology Chapter 10 Question No 8:
Glucose fermentation by Yeast yields
Option A : Ethanol + CO2
Option B : Ethanol + H2O
Option C : Methanol + CO2
Option D : H2O + CO2
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Option A : Ethanol + CO2
MCQ Questions for Class 12 Biology Chapter 10 Question No 9:
A free living nitrogen fixing cyanobacterium which also forms symbiotic association with Azolla is
Option A : Anabaena
Option B : Nostoc
Option C : Chlorella
Option D : Tolypothrix
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Option B : Nostoc
MCQ Questions for Class 12 Biology Chapter 10 Question No 10:
During its formulation , bread becomes porous due to CO2 released by
Option A : Protozoans
Option B : Bacteria
Option C : Yeast
Option D : Viruses
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Option C : Yeast
