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IMPORTANT
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Removal of large pieces of floating debris, oily substances, etc., during sewage treatment, is called

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Important Questions on Microbes in Human Welfare

EASY
CUET (UG)
IMPORTANT
Achieve CUET (UG) Biology Practice Book>Chapter 10 - Microbes in Human Welfare>Exercise>Q 43
BOD of wastewater is estimated by measuring the amount of
EASY
CUET (UG)
IMPORTANT
Achieve CUET (UG) Biology Practice Book>Chapter 10 - Microbes in Human Welfare>Exercise>Q 44
The primary treatment of waste water involves the removal of
EASY
CUET (UG)
IMPORTANT
Achieve CUET (UG) Biology Practice Book>Chapter 10 - Microbes in Human Welfare>Exercise>Q 45
Which one is the first step of sewage treatment?
MEDIUM
CUET (UG)
IMPORTANT
Achieve CUET (UG) Biology Practice Book>Chapter 10 - Microbes in Human Welfare>Exercise>Q 46
Eutrophicated lake has BOD
MEDIUM
CUET (UG)
IMPORTANT
Achieve CUET (UG) Biology Practice Book>Chapter 10 - Microbes in Human Welfare>Exercise>Q 47
Read the following statements and select the correct option.
Statement I: BOD represents the amount of dissolved oxygen that would be consumed if all the organic matter in one litre of water were oxidised by microorganisms.
Statement II: High value of BOD indicates that water is highly polluted by organic matter.
EASY
CUET (UG)
IMPORTANT
Achieve CUET (UG) Biology Practice Book>Chapter 10 - Microbes in Human Welfare>Exercise>Q 48
Ganga action plan for controlling pollution in the Ganges started in
HARD
CUET (UG)
IMPORTANT
Achieve CUET (UG) Biology Practice Book>Chapter 10 - Microbes in Human Welfare>Exercise>Q 49
The gases produced in an anaerobic sludge digesters are
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CUET (UG)
IMPORTANT
Achieve CUET (UG) Biology Practice Book>Chapter 10 - Microbes in Human Welfare>Exercise>Q 50
When domestic sewage mixes with river water