NEET PYQs for Microbes in Human Welfare with Solutions: Practice NEET Previous Year Questions

Updated 3+ months ago

Microbes in Human Welfare is an important topic in the Biology section in NEET exam. Practising this topic will increase your score overall and make your conceptual grip on NEET exam stronger.

This article gives you a full set of NEET PYQs for Microbes in Human Welfare with explanations for effective preparation. Practice of NEET Biology PYQs including Microbes in Human Welfare questions regularly will improve accuracy, speed, and confidence in the NEET 2026 exam.

NEET PYQs for Microbes in Human Welfare with Solutions

1.
Which of the following in sewage treatment removes suspended solids?
- Tertiary treatment
- Secondary treatment
- Primary treatment
- Sludge treatment
View Solution
2.
Select the correct group of biocontrol agents.
- Bacillus thuringiensis, Tobacco mosaic virus, Aphids
- Trichoderma, Baculovirus, Bacillus thuringiensis
- Oscillatoria, Rhizobium, Trichoderma
- Nostoc, Azospirillium, Nucleopolyhedrovirus
View Solution
3.
Monascus purpureus is yeast used commercially in production of
- Ethanol
- Citric acid
- Streptokinase for removing clots in blood vessels
- Blood cholesterol lowering statins
View Solution
4.
Domestic sewage of large cities
- Has very high amount of suspended solids and dissolved salts
- When treated in Sewage Treatment Plant does not require aeration
- Has high BOD as it contains both aerobic and anaerobic bacteria
- Is processed by aerobic and then an aerobic bacteria in secondary treatment in Sewage Treatment Plant
View Solution
5.
Match the following organisms with the products they produce:
LIST I
LIST II
A Lactobacillus i Cheese
B Saccharomyces ii Curd cerevisiae
C Aspergillus niger iii Citric Acid
D Acetobacter aceti iv Bread
v Acetic Acid
Select the correct option
- (a)-(ii)(b)- (iv)(c)- (v) (d)-(iii)
- a-(ii) b- (iv) c-(iii) d-(v)
- a- (iii)b- (iv)c- (v)d- (i) (ii)
- (a)-(ii) (b)-(i) (c)-(iii) (d)-(v)
View Solution
6.
Which of the following is correctly matched for the product produced by them?
- Acetobacter aceti : Antibiotics
- Methanobacterium : Lactic acid
- Penicillium notatum : Acetic acid
- Saccharomyces cerevisiae : Ethanol
View Solution
7.
Which of the following in sewage treatment removes suspended solids ?
- Secondary treatment
- Primary treatment
- Sludge treatment
- Tertiary treatment
View Solution
8.
During sewage treatment biogas produced includes
- Hydrogen sulphide, Nitrogen, Methane
- Methane, Oxygen, Hydrogen sulphide
- Methane, Hydrogen sulphide, Carbon dioxide
- Hydrogen sulphide, Methane, Sulphur oxide
View Solution
9.
Select the correct group of biocontrol agents
- Oscillatoria, Rhizobium, Trichoderma
- Nostoc, Azospirillium, Nucleopolyhedrovirus
- Bacillus thuringiensis, Tobacco mosaic virus, Aphids
- Trichoderma, Baculovirus, Bacillus thuringiensis
View Solution
10.
In gobar gas, the maximum amount is that of
- butane
- methane
- propane
- carbon dioxide.
View Solution
11.
Match the following columns and select the correct option.
Column I
Column II
A Clostridium I Cyclosporin-A
B Trichoderma II Butyric Acid
C Monascus III Butyric Acid
D Aspergillus niger IV Blood cholesterol lowering agent
- (a)- (iii) (b)-(iv)(c)- (ii)(d)- (i)
- (a)- (ii) (b)-(i)(c)- (iv)(d)-(iii)
- (a)-(i) (b)- (ii) (c)- (iv) (d)- (iii)
- (a)- (iv) (b)- (iii)(c)- (ii)(d)- (i)
View Solution
12.
Select the mismatch :
- Rhodospirillum - Mycorrhiza
- Anabaena - Nitrogen fixer
- Rhizobium - Alfalfa
- Frankia - Alnus
View Solution
13.
What gases are produced in anaerobic sludge digesters?
- Methane, hydrogen sulphide and CO₂
- Methane, hydrogen sulphide and O₂
- Hydrogen sulphide and CO₂
- Methane and CO₂ only
View Solution
14.
A good producer of citric acid is
- Saccharomyces
- Aspergillus
- Pseudomonas
- Clostridiun
View Solution
15.
Which of the following is a commercial blood cholesterol lowering agent ?
- Streptokinase
- Lipases
- Cyclosporin A
- Statin
View Solution

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LIST I		LIST II
A	Lactobacillus	i	Cheese
B	Saccharomyces	ii	Curd cerevisiae
C	Aspergillus niger	iii	Citric Acid
D	Acetobacter aceti	iv	Bread
		v	Acetic Acid

Column I		Column II
A	Clostridium	I	Cyclosporin-A
B	Trichoderma	II	Butyric Acid
C	Monascus	III	Butyric Acid
D	Aspergillus niger	IV	Blood cholesterol lowering agent

NEET PYQs for Microbes in Human Welfare with Solutions

1.Which of the following in sewage treatment removes suspended solids?

2.Select the correct group of biocontrol agents.

3.Monascus purpureus is yeast used commercially in production of

4.Domestic sewage of large cities

5.Match the following organisms with the products they produce: LIST I LIST II ALactobacillus iCheese BSaccharomyces iiCurd cerevisiae CAspergillus niger iiiCitric AcidDAcetobacter aceti ivBread vAcetic AcidSelect the correct option

6.Which of the following is correctly matched for the product produced by them?

7.Which of the following in sewage treatment removes suspended solids ?

8.During sewage treatment biogas produced includes

9.Select the correct group of biocontrol agents

10.In gobar gas, the maximum amount is that of

11.Match the following columns and select the correct option.Column IColumn II AClostridiumICyclosporin-A BTrichodermaIIButyric AcidCMonascusIIIButyric AcidDAspergillus niger IVBlood cholesterol lowering agent

12.Select the mismatch :

13.What gases are produced in anaerobic sludge digesters?

14.A good producer of citric acid is

15.Which of the following is a commercial blood cholesterol lowering agent ?

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1.
Which of the following in sewage treatment removes suspended solids?

2.
Select the correct group of biocontrol agents.

3.
Monascus purpureus is yeast used commercially in production of

4.
Domestic sewage of large cities

5.
Match the following organisms with the products they produce:
LIST I
LIST II
A Lactobacillus i Cheese
B Saccharomyces ii Curd cerevisiae
C Aspergillus niger iii Citric Acid
D Acetobacter aceti iv Bread
v Acetic Acid
Select the correct option

6.
Which of the following is correctly matched for the product produced by them?

7.
Which of the following in sewage treatment removes suspended solids ?

8.
During sewage treatment biogas produced includes

9.
Select the correct group of biocontrol agents

10.
In gobar gas, the maximum amount is that of

11.
Match the following columns and select the correct option.
Column I
Column II
A Clostridium I Cyclosporin-A
B Trichoderma II Butyric Acid
C Monascus III Butyric Acid
D Aspergillus niger IV Blood cholesterol lowering agent

12.
Select the mismatch :

13.
What gases are produced in anaerobic sludge digesters?

14.
A good producer of citric acid is

15.
Which of the following is a commercial blood cholesterol lowering agent ?