The major part of activated sludge is sent to

(1) Anaerobic sludge digesters

(2) Aerobic sludge digesters

(3) Aeration tank

(4) Settling tank

Subtopic:  Microbes in Sewage Treatment |
 86%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

From secondary settling tanks what is used as inoculum for primary settling tanks?

(1) Activated sludge

(2) Anaerobic bacteria

(3) Fungal Filaments

(4) Biogas

Subtopic:  Microbes in Sewage Treatment |
 89%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

In anaerobic sludge digesters, the anaerobic bacteria

(1) Digest Fungi

(2) Digest Bacteria

(3) Both A and B

(4) Digest the organic matter

Subtopic:  Microbes in Sewage Treatment |
 77%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

Methane, Hydrogen sulfide and carbon dioxide are produced in

(1) Aerobic settling tanks

(2) Anaerobic sludge digesters

(3) Aeration tanks

(4) Primary settling tanks

Subtopic:  Microbes in Sewage Treatment |
 93%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Which of the following is released into natural water bodies like rivers and streams?

(1) Effluent of primary treatment

(2) Effluent of secondary treatment

(3) Settling component of secondary treatment

(4) Settling component of primary treatment

Subtopic:  Microbes in Sewage Treatment |
 85%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Biogas is used as source of energy because it is

(1) Easy to produce

(2) Inflammable

(3) Reactive

(4) Very light

Subtopic:  Microbes in Production of Biogas |
 82%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

Ganga Action Plan and Yamuna Action Plan are initiated by

(1) Ministry of Environment and Forest

(2) Ministry of Environment

(3) Ministry of Water bodies

(4) Ministry of Forest

Subtopic:  Microbes in Sewage Treatment |
 85%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Which of the following is not correct with respect to biogas?

(1) Contains predominantly Methane

(2) Produced by microbial activity

(3) May be used as fuel

(4) Not inflammable

Subtopic:  Microbes in Production of Biogas |
 94%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The type of the gas produced as the end product of growth and metabolism by microbes depend on

(1) Microbes

(2) Type of organic substrate they utilize

(3) Type of inorganic salts taken by them

(4) Both A and B

Subtopic:  Microbes in Production of Biogas |
 89%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

Bacteria growing anaerobically on cellulosic material, produce

(1) Only Carbon-dioxide

(2) Carbon-dioxide, Methane and Hydrogen

(3) Methane

(4) Methane and Hydrogen

Subtopic:  Microbes in Production of Biogas |
 91%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch