343952
Wastewater treatment generates a large quantity of sludge, which can be treated by:
1 Anaerobic digesters
2 Floc
3 Chemicals
4 Oxidation pond.
Explanation:
Sludge needs to be subjected to biological treatment which is provided by anaerobic digesters.
NCERT Exemplar
BIOXII10: MICROBES IN HUMAN WELFARE
343953
All solids that settle form the ____i____, and the____ii____ forms the effluent.
1 i- secondary sludge, ii- supernatant
2 i- primary sludge, ii- supernatant
3 i- primary sludge, ii- settled matter
4 i- secondary sludge, ii- settled matter
Explanation:
All solids that settle form the primary sludge, and the supernatant forms the effluent.
BIOXII10: MICROBES IN HUMAN WELFARE
343954
BOD of waste water is estimated by measuring the amount of:
1 Total organic matter
2 Biodegradable organic matter
3 Oxygen evolution
4 Oxygen consumption.
Explanation:
BOD stands for biochemical oxygen demand and is thus related to oxygen consumption.
NCERT Exemplar
BIOXII10: MICROBES IN HUMAN WELFARE
343955
The domestic sewage in large cities
1 Is processed by aerobic and then anaerobic bacteria in the sewage treatment plants.
2 It has very high amounts of suspended solids and dissolved salts.
3 It has a high BOD as it contains both aerobic and anaerobic bacteria.
4 It has a low BOD as it contains both aerobic and anaerobic bacteria.
Explanation:
Sewage water can be purified by passing it through sewage treatment plants with the action of Heterotrophic Microorganisms. There are 3 stages of treatment i. Primary ii. Secondary and iii Tertiary treatment.
AIPMT - 2012
BIOXII10: MICROBES IN HUMAN WELFARE
343956
Which of the following in sewage treatment removes suspended solids?
1 Secondary treatment
2 Primary treatment
3 Sludge treatment
4 Tertiary treatment
Explanation:
Primary treatment involves basic processes to remove suspended solid waste and reduce its biochemical oxygen demand (BOD). This in turn increases dissolved oxygen, which is good for aquatic organisms and food webs. Primary treatment can reduce BOD by 20 \(30 \%\) and suspended solids by up to \(60 \%\).
343952
Wastewater treatment generates a large quantity of sludge, which can be treated by:
1 Anaerobic digesters
2 Floc
3 Chemicals
4 Oxidation pond.
Explanation:
Sludge needs to be subjected to biological treatment which is provided by anaerobic digesters.
NCERT Exemplar
BIOXII10: MICROBES IN HUMAN WELFARE
343953
All solids that settle form the ____i____, and the____ii____ forms the effluent.
1 i- secondary sludge, ii- supernatant
2 i- primary sludge, ii- supernatant
3 i- primary sludge, ii- settled matter
4 i- secondary sludge, ii- settled matter
Explanation:
All solids that settle form the primary sludge, and the supernatant forms the effluent.
BIOXII10: MICROBES IN HUMAN WELFARE
343954
BOD of waste water is estimated by measuring the amount of:
1 Total organic matter
2 Biodegradable organic matter
3 Oxygen evolution
4 Oxygen consumption.
Explanation:
BOD stands for biochemical oxygen demand and is thus related to oxygen consumption.
NCERT Exemplar
BIOXII10: MICROBES IN HUMAN WELFARE
343955
The domestic sewage in large cities
1 Is processed by aerobic and then anaerobic bacteria in the sewage treatment plants.
2 It has very high amounts of suspended solids and dissolved salts.
3 It has a high BOD as it contains both aerobic and anaerobic bacteria.
4 It has a low BOD as it contains both aerobic and anaerobic bacteria.
Explanation:
Sewage water can be purified by passing it through sewage treatment plants with the action of Heterotrophic Microorganisms. There are 3 stages of treatment i. Primary ii. Secondary and iii Tertiary treatment.
AIPMT - 2012
BIOXII10: MICROBES IN HUMAN WELFARE
343956
Which of the following in sewage treatment removes suspended solids?
1 Secondary treatment
2 Primary treatment
3 Sludge treatment
4 Tertiary treatment
Explanation:
Primary treatment involves basic processes to remove suspended solid waste and reduce its biochemical oxygen demand (BOD). This in turn increases dissolved oxygen, which is good for aquatic organisms and food webs. Primary treatment can reduce BOD by 20 \(30 \%\) and suspended solids by up to \(60 \%\).
343952
Wastewater treatment generates a large quantity of sludge, which can be treated by:
1 Anaerobic digesters
2 Floc
3 Chemicals
4 Oxidation pond.
Explanation:
Sludge needs to be subjected to biological treatment which is provided by anaerobic digesters.
NCERT Exemplar
BIOXII10: MICROBES IN HUMAN WELFARE
343953
All solids that settle form the ____i____, and the____ii____ forms the effluent.
1 i- secondary sludge, ii- supernatant
2 i- primary sludge, ii- supernatant
3 i- primary sludge, ii- settled matter
4 i- secondary sludge, ii- settled matter
Explanation:
All solids that settle form the primary sludge, and the supernatant forms the effluent.
BIOXII10: MICROBES IN HUMAN WELFARE
343954
BOD of waste water is estimated by measuring the amount of:
1 Total organic matter
2 Biodegradable organic matter
3 Oxygen evolution
4 Oxygen consumption.
Explanation:
BOD stands for biochemical oxygen demand and is thus related to oxygen consumption.
NCERT Exemplar
BIOXII10: MICROBES IN HUMAN WELFARE
343955
The domestic sewage in large cities
1 Is processed by aerobic and then anaerobic bacteria in the sewage treatment plants.
2 It has very high amounts of suspended solids and dissolved salts.
3 It has a high BOD as it contains both aerobic and anaerobic bacteria.
4 It has a low BOD as it contains both aerobic and anaerobic bacteria.
Explanation:
Sewage water can be purified by passing it through sewage treatment plants with the action of Heterotrophic Microorganisms. There are 3 stages of treatment i. Primary ii. Secondary and iii Tertiary treatment.
AIPMT - 2012
BIOXII10: MICROBES IN HUMAN WELFARE
343956
Which of the following in sewage treatment removes suspended solids?
1 Secondary treatment
2 Primary treatment
3 Sludge treatment
4 Tertiary treatment
Explanation:
Primary treatment involves basic processes to remove suspended solid waste and reduce its biochemical oxygen demand (BOD). This in turn increases dissolved oxygen, which is good for aquatic organisms and food webs. Primary treatment can reduce BOD by 20 \(30 \%\) and suspended solids by up to \(60 \%\).
343952
Wastewater treatment generates a large quantity of sludge, which can be treated by:
1 Anaerobic digesters
2 Floc
3 Chemicals
4 Oxidation pond.
Explanation:
Sludge needs to be subjected to biological treatment which is provided by anaerobic digesters.
NCERT Exemplar
BIOXII10: MICROBES IN HUMAN WELFARE
343953
All solids that settle form the ____i____, and the____ii____ forms the effluent.
1 i- secondary sludge, ii- supernatant
2 i- primary sludge, ii- supernatant
3 i- primary sludge, ii- settled matter
4 i- secondary sludge, ii- settled matter
Explanation:
All solids that settle form the primary sludge, and the supernatant forms the effluent.
BIOXII10: MICROBES IN HUMAN WELFARE
343954
BOD of waste water is estimated by measuring the amount of:
1 Total organic matter
2 Biodegradable organic matter
3 Oxygen evolution
4 Oxygen consumption.
Explanation:
BOD stands for biochemical oxygen demand and is thus related to oxygen consumption.
NCERT Exemplar
BIOXII10: MICROBES IN HUMAN WELFARE
343955
The domestic sewage in large cities
1 Is processed by aerobic and then anaerobic bacteria in the sewage treatment plants.
2 It has very high amounts of suspended solids and dissolved salts.
3 It has a high BOD as it contains both aerobic and anaerobic bacteria.
4 It has a low BOD as it contains both aerobic and anaerobic bacteria.
Explanation:
Sewage water can be purified by passing it through sewage treatment plants with the action of Heterotrophic Microorganisms. There are 3 stages of treatment i. Primary ii. Secondary and iii Tertiary treatment.
AIPMT - 2012
BIOXII10: MICROBES IN HUMAN WELFARE
343956
Which of the following in sewage treatment removes suspended solids?
1 Secondary treatment
2 Primary treatment
3 Sludge treatment
4 Tertiary treatment
Explanation:
Primary treatment involves basic processes to remove suspended solid waste and reduce its biochemical oxygen demand (BOD). This in turn increases dissolved oxygen, which is good for aquatic organisms and food webs. Primary treatment can reduce BOD by 20 \(30 \%\) and suspended solids by up to \(60 \%\).
343952
Wastewater treatment generates a large quantity of sludge, which can be treated by:
1 Anaerobic digesters
2 Floc
3 Chemicals
4 Oxidation pond.
Explanation:
Sludge needs to be subjected to biological treatment which is provided by anaerobic digesters.
NCERT Exemplar
BIOXII10: MICROBES IN HUMAN WELFARE
343953
All solids that settle form the ____i____, and the____ii____ forms the effluent.
1 i- secondary sludge, ii- supernatant
2 i- primary sludge, ii- supernatant
3 i- primary sludge, ii- settled matter
4 i- secondary sludge, ii- settled matter
Explanation:
All solids that settle form the primary sludge, and the supernatant forms the effluent.
BIOXII10: MICROBES IN HUMAN WELFARE
343954
BOD of waste water is estimated by measuring the amount of:
1 Total organic matter
2 Biodegradable organic matter
3 Oxygen evolution
4 Oxygen consumption.
Explanation:
BOD stands for biochemical oxygen demand and is thus related to oxygen consumption.
NCERT Exemplar
BIOXII10: MICROBES IN HUMAN WELFARE
343955
The domestic sewage in large cities
1 Is processed by aerobic and then anaerobic bacteria in the sewage treatment plants.
2 It has very high amounts of suspended solids and dissolved salts.
3 It has a high BOD as it contains both aerobic and anaerobic bacteria.
4 It has a low BOD as it contains both aerobic and anaerobic bacteria.
Explanation:
Sewage water can be purified by passing it through sewage treatment plants with the action of Heterotrophic Microorganisms. There are 3 stages of treatment i. Primary ii. Secondary and iii Tertiary treatment.
AIPMT - 2012
BIOXII10: MICROBES IN HUMAN WELFARE
343956
Which of the following in sewage treatment removes suspended solids?
1 Secondary treatment
2 Primary treatment
3 Sludge treatment
4 Tertiary treatment
Explanation:
Primary treatment involves basic processes to remove suspended solid waste and reduce its biochemical oxygen demand (BOD). This in turn increases dissolved oxygen, which is good for aquatic organisms and food webs. Primary treatment can reduce BOD by 20 \(30 \%\) and suspended solids by up to \(60 \%\).
