Microbes in Human Welfare MCQs | NCERT Biology
Chapter-wise Multiple Choice Questions on 'Microbes in Human Welfare' for NEET exam, based on NCERT Biology Class-12 (Chapter-8) with Answer Key and Solutions.
1.
Read the book NCERT Biology class-12 (chapter- 8): Microbes in Human Welfare from here.
1. Question
Acetic acid is commercially obtained from:
Penicillium
Aspergillus niger
Lactobacillus
Acetobacter aceti
Correct Answer
Wrong Answer
2. Question
Statins, used as blood-cholesterol lowering agents, are produced by:
Fungus Trichoderma polysporum
Bacterium Streptococcus
Fungus Monascus purpureus
Bacterium Clostridium
Correct Answer
Wrong Answer
3. Question
Which of the following is a free living biocontrol microbial agent for plant pathogen?
Mucor
Glomus
Trichoderma
Rhizobium
Correct Answer
Wrong Answer
4. Question
Alexander Flemming discovered penicillin in 1928 while working with :
Streptomyces
Bacteria (Staphylococcus)
Penicillium notatum
P. chrysogenum
Correct Answer
Wrong Answer
5. Question
If a bacterial cell divides once every minute and take 23 minutes to fill a bottle. How much time (in minute) it will take to fill half the bottle.
23
12
22
46
Correct Answer
Wrong Answer
6. Question
Biogas is produced by anaerobic breakdown of biomass of agricultural waste by methanogenic bacteria.
Biogas is mixture of:
Only CH4
Only CH4 & H2
CH4 , CO2 & H2S
Only CO2 & O2
Correct Answer
Wrong Answer
7. Question
Biopesticides are:
The chemicals which are used to destroy the pests
The living organism or their products which are used for pest control
The organisms which destroy the crops
None of these
