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
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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
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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
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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
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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
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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
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Methanogens are commonly found in

(1) Aerobic sludge

(2) Anaerobic sludge

(3) Flocs

(4) Mixotrophic sludge

Subtopic:  Microbes in Production of Biogas |
 94%
From NCERT
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Methanogens are found in which organ of cattle?

(1) Rumen

(2) A part of stomach

(3) Both A and B

(4) Intestine

Subtopic:  Microbes in Production of Biogas |
 77%
From NCERT
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The nutrition of cattle is taken care by which of the following microbes?

(1) Methanogens

(2) Halophiles

(3) Cynobacteria

(4) Thermoacidophiles

Subtopic:  Microbes in Production of Biogas |
 98%
From NCERT
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The biogas plant: wrong statement is

(1) 10-15 feet deep

(2) In which bio-wastes are collected and slurry of dung is fed

(3) Has a fixed lid

(4) Has an outlet

Subtopic:  Microbes in Production of Biogas |
 87%
From NCERT
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