Biology MCQ on Microbes in Human Welfare for NEET and Medical Exam 2021

MCQ on Microbes in Human Welfare: Biology is one of the most important and vital sections in NEET. It includes theories, descriptions, discoveries, diagrams, definitions, explanation of differences and relations. Most of the concepts covered in the NEET syllabus are from the NCERT syllabus of Class 11 & 12. Other related sources make up for the rest of the syllabus.

In this post we are providing you MCQ on Microbes in Human Welfare, which will be beneficial for you in upcoming NEET, AIIMS, JIPMER, PGIMER, CBSE Board, ICSE Board, Class 12th, 11th.

MCQ on Microbes in Human Welfare

Q1. What does a high value of BOD(Biochemical Oxygen Demand) indicate?
a) That water is pure
b) that water is less polluted
c) that water is highly polluted
d) that consumption of organic matter by microbes is higher in the water

Q2. _____ is chiefly produced by the activity of an anaerobic bacteria on sewage.
a) Laughing gas
b) Propane
c) Mustard gas
d) Marsh gas

Q3. Which is not an example of performing biological control of diseases/pests using microbes ?
a) Trichoderma sp. against some plant pathogens
b) Nucleopolyhedrovirus against insects and other arthropods
c) Ladybird beetle against aphids
d) Bt-cotton to increase yield

Q4. Which of the following is not a biofertilizer ?
a) Agrobacterium
b) Nostoc
c) Rhizobium
d)Mycorrhiza

Q5. During which stage of the purification of the sewage water are microbes used?
a) Primary treatment
b) Secondary treatment
c) Tertiary treatment
d) Both (1) and (2)

Q6. For the production of ethanol, the most common substrate used in distilleries is ______.
a) Soya meal
b) Molasses
c) Ground gram
d) cornmeal

Q7. In Swiss cheese, big holes are made by a ______.
a) bacterium producing methane gas
b) machine
c) fungus releasing a lot of gases while its metabolic activities
d) bacterium producing large quantities of carbon dioxide

Q8. Carbon dioxide is not released in which of the following processes?
a) Lactate fermentation
b) Alcholic fermentation
c) Aerobic respiration in animals
d) Aerobic respiration in plants

Q9. ______ is a good producer of citric acid.
a) Aspergillus
b) Clostridium 
c) Saccharomyces
d) Pseudomonas

---

MCQ Link for NEET/JEE
JEE/NEET Physics MCQ	Click Here
NEET/JEE Chemistry MCQ	Click Here
NEET Biology MCQ	Click Here
JEE Math’s MCQ	Click Here

 

Notes PDF Link for NEET/JEE
Physics Notes PDF	Click Here
Chemistry Notes PDF	Click Here
Biology Notes PDF	Click Here
Math’s Notes PDF	Click Here

 

---

Follow on Facebook

By Team Learning Mantras