Microbes in Human Welfare Class 12 MCQ Online Test With Answers Questions

Check the below NCERT MCQ Questions for Class 12 Biology Chapter 10 Microbes in Human Welfare with Answers Pdf free download. MCQ Questions for Class 12 Biology with Answers were prepared based on the latest exam pattern. We have provided Microbes in Human Welfare Class 12 Biology MCQs Questions with Answers to help students understand the concept very well.

Class 12 Biology Chapter 10 MCQ With Answers

Biology Class 12 Chapter 10 MCQs On Microbes in Human Welfare

Microbes In Human Welfare MCQ Question 1.
Bacillus thuringiensis (Bt) strains have been used for designing novel:
(a) Bio-metallurigcal techniques
(b) Bio-mineralization process
(c) Bio-insecticidal plants
(d) Bio-fertilizers

Answer

Answer: (c) Bio-insecticidal plants

Microbes In Human Welfare Class 12 MCQ Question 2.
Streptococcus is used in the preparation of:
(a) Wine
(b) Idli
(c) Paneer
(d) Bread

Answer

Answer: (c) Paneer

MCQ On Microbes In Human Welfare Question 3.
Nif gene occurs in:
(a) Peiiicillium
(b) Rhizobium
(c) Aspergillus
(d) Streptococcus

Answer

Answer: (b) Rhizobium

Microbes In Human Welfare MCQ With Answers Question 4.
Azoila has symbiotic relationship with:
(a) Chlotfila
(b) Anabaena
(c) Nostoc
(d) Tolypothrix

Answer

Answer: (b) Anabaena

MCQ On Microbes In Human Welfare Class 12 Question 5.
Term antibiotic was first used by :
(a) Flemming
(b) Pasteur
(c) Waksman
(d) Lister

Answer

Answer: (c) Waksman

Microbes In Human Welfare Class 12 MCQ Questions Question 6.
A free living anaerobic nitrogen fixing bacterium is:
(a) Rhizobium
(b) Streptococcus
(c) Azotobactor
(d) Clostridium

Answer

Answer: (d) Clostridium

Microbes In Human Welfare MCQs Question 7.
Citric acid is produced by:
(a) Rhizopus
(b) Mucor
(c) Aspergillus
(d) Saccharomyces

Answer

Answer: (a) Rhizopus

MCQs Of Biology Class 12 Chapter 10 Question 8.
In nostoc, enzyme nitrogenase occurs in :
(a) Vegetative cells
(b) Heterocysts
(c) Both (a) and (b)
(d) Only in hormogones

Answer

Answer: (c) Both (a) and (b)

Class 12 Biology Chapter 10 MCQ Question 9.
Usnic acid is an antibiotic obtained from :
(a) Fungi
(b) Bacteria
(c) Lichens
(d) Algae

Answer

Answer: (c) Lichens

MCQ Of Microbes In Human Welfare Question 10.
By anobacteria are useful biofertilizers in the; field of:
(a) Wheat
(b) Maize
(c) Rice
(d) Sugarcane

Answer

Answer: (c) Rice

MCQs On Microbes In Human Welfare Question 11.
Streptomycin is produced by:
(a) By Streptomyces Scoleus
(b) By Streptomyces fradiae
(c) By Streptomyces venezueleae
(d) By Streptomyces griseus

Answer

Answer: (d) By Streptomyces griseus

MCQ Questions On Microbes In Human Welfare Question 12.
Antibiotics are:
(a) Medicines
(b) Toxin
(c) Plants
(d) Syrups

Answer

Answer: (a) Medicines

MCQ Microbes In Human Welfare Question 13.
A free-living aerobic and non-photosynthetic nitrogen fixing bacterium is:
(a) Anabaena
(b) Clostridium
(c) Azotobactor
(d) Rhizobium

Answer

Answer: (c) Azotobactor

MCQ Of Chapter 10 Biology Class 12 Question 14.
For retting of jute, the fermenting microbe is:
(a) Methanophilic bacteria
(b) Butyric acid bacteria
(c) Helicobactor pylon
(d) Streptococcus lactin

Answer

Answer: (b) Butyric acid bacteria

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