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Botany MCQs for NEET — Practice Questions with Answers

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

A. Effluent of primary treatment B. Effluent of secondary treatment C. Settling component of secondary treatment D. Settling component of primary treatment

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Explanation

NCERT page number 184

10.3 Microbes In Sewage Treatment

Microbes In Human Welfare

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Ganga Action Plan and Yamuna Action Plan are initiated by

A. Ministry of Environment and Forest B. Ministry of Environment C. Ministry of Water bodies D. Ministry of Forest

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Explanation

NCERT page number 185

10.3 Microbes In Sewage Treatment

Microbes In Human Welfare

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

A. Contains predominantly Methane B. Produced by microbial activity C. May be used as fuel D. Not inflammable

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Explanation

NCERT page number 185

10.4 Microbes in Production of Biogas

Microbes In Human Welfare

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

A. Microbes B. Type of organic substrate they utilize C. Type of inorganic salts taken by them D. Both A and B

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Explanation

NCERT page number 185

10.4 Microbes in Production of Biogas

Microbes In Human Welfare

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Bacteria growing anaerobically on cellulosic material, produce

A. Only Carbon-dioxide B. Carbon-dioxide, Methane and Hydrogen C. Methane D. Methane and Hydrogen

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Explanation

NCERT page number 185

10.4 Microbes in Production of Biogas

Microbes In Human Welfare

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Methanogens are commonly found in

A. Aerobic sludge B. Anaerobic sludge C. Flocs D. Mixotrophic sludge

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Explanation

NCERT page number 185

10.4 Microbes in Production of Biogas

Microbes In Human Welfare

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Methanogens are found in which organ of cattle?

A. Rumen B. A part of stomach C. Both A and B D. Intestine

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Explanation

NCERT page number 185

10.4 Microbes in Production of Biogas

Microbes In Human Welfare

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The nutrition of cattle is taken care by which of the following microbes?

A. Methanogens B. Halophiles C. Cynobacteria D. Thermoacidophiles

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Explanation

NCERT page number 185

10.4 Microbes in Production of Biogas

Microbes In Human Welfare

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The biogas plant: wrong statement is

A. 10-15 feet deep B. In which bio-wastes are collected and slurry of dung is fed C. Has a fixed lid D. Has an outlet

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Explanation

NCERT page number 185-186

10.4 Microbes in Production of Biogas

Microbes In Human Welfare

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The spent slurry in biogas plant is

A. Used as insecticide B. Used as fertiliser C. Removed from outlet to sewage treatment plants D. Both A and B

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Explanation

NCERT page number 186

10.4 Microbes in Production of Biogas

Microbes In Human Welfare

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