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 Microbes in Human Welfare CBSE Class 12 Biology MCQ Questions with Answer Keys
Microbes in Human Welfare MCQ Questions for Class 12 Question No 11
Pasteurisation is heating at
Option A : 1200 for 60 minutes
Option B : 600 – 630 C for therty minutes
Option C : 700 C for 60 minutes
Option D : 800 for 30 minutes
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Option B : 600 – 630 C for therty minutes
Microbes in Human Welfare MCQ Questions for Class 12 Question No 12
Azolla possesss symbiotic association with
Option A : Rhizobium
Option B : Nostoc
Option C : Anabaena
Option D : Azospirillum
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Option C : Anabaena
Microbes in Human Welfare MCQ Questions for Class 12 Question No 13
Which of the following is source of single cell protein
Option A : Bacillus thuringiensis
Option B : Azospirillum
Option C : Saccharomyces cerevisiae
Option D : Methylophilus methylophus
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Option D : Methylophilus methylophus
Microbes in Human Welfare MCQ Questions for Class 12 Question No 14
Assertion: Nitrogen fixing enzyme in legume root nodules function at low oxygen concentration
Reason: Low oxygen concentration is provided by leghaemoglobin
Option A : Both are true reason being correct explanation
Option B : Both are true but reason is not correct explanation
Option C : Assertion is true but reason is wrong
Option D : Both are wrong
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Option B : Both are true but reason is not correct explanation
Microbes in Human Welfare MCQ Questions for Class 12 Question No 15
In 1928, a scientist discovered the first effective antibiotic. Scientist and antibiotic are
Option A : Fleming – Streptomycin
Option B : Fleming – Penicillin
Option C : Waksman – Penicillin
Option D : Waksman -Streptomycin
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Option B : Fleming – Penicillin
Microbes in Human Welfare MCQ Questions for Class 12 Question No 16
The large holes in ‘Swiss cheese’ are because of
Option A : Clostridium butylicum
Option B : Trichoderma Polysporum
Option C : Propiomibacterium sharmanili
Option D : Sacchasomyces cerevisiae
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Option C : Propiomibacterium sharmanili
Microbes in Human Welfare MCQ Questions for Class 12 Question No 17
Commonly used in alcohal industry is
Option A : Saccharomyces
Option B : Rhizopus
Option C : Puccinia
Option D : Penicillium
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Option A : Saccharomyces
Microbes in Human Welfare MCQ Questions for Class 12 Question No 18:
Which of the following is not used in organic farming
Option A : Earthworm
Option B : Oscillatoria
Option C : Snail
Option D : Glomus
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Option C : Snail
Microbes in Human Welfare MCQ Questions for Class 12 Question No 19:
Red pigment ( leghaemoglobin ) having affinity for oxygen is present in the roots of
Option A : Carrot
Option B : Soyabean
Option C : Mustard
Option D : Radish
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Option B : Soyabean
Microbes in Human Welfare MCQ Questions for Class 12 Question No 20
Bt toxin is got from a
Option A : Eukaryote
Option B : Prokaryote
Option C : Virus
Option D : All the above
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Option B : Prokaryote
