04. Microbes Play a Role in Sewage Treatment
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Microbes in Human Welfare

259978 In domestic sewage impurities in the form of suspended solid, colloidal material and dissolved materials, are about

1 $0.1 \%$
2 $2.1 \%$
3 $5.0 \%$
4 $10.0 \%$
AMU-2012
Microbes in Human Welfare

259983 Study the following statements and select the incorrect ones?
(i) Physical removal of large and small particles through filtration and sedimentation is called primary sewage treatment
(ii) Secondary sewage treatment is mainly a mechanical process
(iii) Activated sludge sediment in sewage treatment plant is a rich source of aerobic bacteria
(iv) Biogas, commonly called as gobar gas, is pure methane

1 (i) \& (ii) only
2 (ii) \& (iv) only
3 (ii) \& (iii) only
4 (iii) \& (iv) only
AP EAMCET-03.09.2021 Shift-II
Microbes in Human Welfare

259984 The below diagram represents a typical biogas plant. Select the correct option for $A, B$ and $C$ respectively?
original image
Options:

1 $\mathrm{A} \rightarrow$ Sludge, $\mathrm{B} \rightarrow$ Dung + water, $\mathrm{C} \rightarrow$ $\mathrm{CH}_4+\mathrm{CO}_2$
2 $\mathrm{A} \rightarrow$ Dung + water, $\mathrm{B} \rightarrow$ Sludge, $\mathrm{C} \rightarrow$ $\mathrm{CH}_4+\mathrm{CO}_2$
3 A $\rightarrow$ Sludge, $\mathrm{B} \rightarrow \mathrm{CH}_4+\mathrm{CO}_2, \mathrm{C} \rightarrow$ Dung + water
4 $\mathrm{A} \rightarrow \mathrm{CH}_4+\mathrm{CO}_2, \mathrm{~B} \rightarrow$ Dung + water, $\mathrm{C} \rightarrow$ Sludge
AP EAMCET-03.09.2021 Shift-II
Microbes in Human Welfare

259976 Foul smell in the water bodies of tanks, ponds etc. is due to :

1 Aerobiosis
2 Anaerobiosis
3 Psammophytes
4 Biological magnification
Manipal-2004
Microbes in Human Welfare

259979 A sewage treatment process in which a part of decomposer bacteria present in the waste is recycled into the starting of the process is called

1 cyclic treatment
2 activated sludge treatment
3 primary treatment
4 tertiary treatment
DUMET-2009
NEET DIGITAL LIBRARY
Microbes in Human Welfare

259978 In domestic sewage impurities in the form of suspended solid, colloidal material and dissolved materials, are about

1 $0.1 \%$
2 $2.1 \%$
3 $5.0 \%$
4 $10.0 \%$
AMU-2012
Microbes in Human Welfare

259983 Study the following statements and select the incorrect ones?
(i) Physical removal of large and small particles through filtration and sedimentation is called primary sewage treatment
(ii) Secondary sewage treatment is mainly a mechanical process
(iii) Activated sludge sediment in sewage treatment plant is a rich source of aerobic bacteria
(iv) Biogas, commonly called as gobar gas, is pure methane

1 (i) \& (ii) only
2 (ii) \& (iv) only
3 (ii) \& (iii) only
4 (iii) \& (iv) only
AP EAMCET-03.09.2021 Shift-II
Microbes in Human Welfare

259984 The below diagram represents a typical biogas plant. Select the correct option for $A, B$ and $C$ respectively?
original image
Options:

1 $\mathrm{A} \rightarrow$ Sludge, $\mathrm{B} \rightarrow$ Dung + water, $\mathrm{C} \rightarrow$ $\mathrm{CH}_4+\mathrm{CO}_2$
2 $\mathrm{A} \rightarrow$ Dung + water, $\mathrm{B} \rightarrow$ Sludge, $\mathrm{C} \rightarrow$ $\mathrm{CH}_4+\mathrm{CO}_2$
3 A $\rightarrow$ Sludge, $\mathrm{B} \rightarrow \mathrm{CH}_4+\mathrm{CO}_2, \mathrm{C} \rightarrow$ Dung + water
4 $\mathrm{A} \rightarrow \mathrm{CH}_4+\mathrm{CO}_2, \mathrm{~B} \rightarrow$ Dung + water, $\mathrm{C} \rightarrow$ Sludge
AP EAMCET-03.09.2021 Shift-II
Microbes in Human Welfare

259976 Foul smell in the water bodies of tanks, ponds etc. is due to :

1 Aerobiosis
2 Anaerobiosis
3 Psammophytes
4 Biological magnification
Manipal-2004
Microbes in Human Welfare

259979 A sewage treatment process in which a part of decomposer bacteria present in the waste is recycled into the starting of the process is called

1 cyclic treatment
2 activated sludge treatment
3 primary treatment
4 tertiary treatment
DUMET-2009
Join With Us for More Updates
Microbes in Human Welfare

259978 In domestic sewage impurities in the form of suspended solid, colloidal material and dissolved materials, are about

1 $0.1 \%$
2 $2.1 \%$
3 $5.0 \%$
4 $10.0 \%$
AMU-2012
Microbes in Human Welfare

259983 Study the following statements and select the incorrect ones?
(i) Physical removal of large and small particles through filtration and sedimentation is called primary sewage treatment
(ii) Secondary sewage treatment is mainly a mechanical process
(iii) Activated sludge sediment in sewage treatment plant is a rich source of aerobic bacteria
(iv) Biogas, commonly called as gobar gas, is pure methane

1 (i) \& (ii) only
2 (ii) \& (iv) only
3 (ii) \& (iii) only
4 (iii) \& (iv) only
AP EAMCET-03.09.2021 Shift-II
Microbes in Human Welfare

259984 The below diagram represents a typical biogas plant. Select the correct option for $A, B$ and $C$ respectively?
original image
Options:

1 $\mathrm{A} \rightarrow$ Sludge, $\mathrm{B} \rightarrow$ Dung + water, $\mathrm{C} \rightarrow$ $\mathrm{CH}_4+\mathrm{CO}_2$
2 $\mathrm{A} \rightarrow$ Dung + water, $\mathrm{B} \rightarrow$ Sludge, $\mathrm{C} \rightarrow$ $\mathrm{CH}_4+\mathrm{CO}_2$
3 A $\rightarrow$ Sludge, $\mathrm{B} \rightarrow \mathrm{CH}_4+\mathrm{CO}_2, \mathrm{C} \rightarrow$ Dung + water
4 $\mathrm{A} \rightarrow \mathrm{CH}_4+\mathrm{CO}_2, \mathrm{~B} \rightarrow$ Dung + water, $\mathrm{C} \rightarrow$ Sludge
AP EAMCET-03.09.2021 Shift-II
Microbes in Human Welfare

259976 Foul smell in the water bodies of tanks, ponds etc. is due to :

1 Aerobiosis
2 Anaerobiosis
3 Psammophytes
4 Biological magnification
Manipal-2004
Microbes in Human Welfare

259979 A sewage treatment process in which a part of decomposer bacteria present in the waste is recycled into the starting of the process is called

1 cyclic treatment
2 activated sludge treatment
3 primary treatment
4 tertiary treatment
DUMET-2009
For More Updates join with Us
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
Microbes in Human Welfare

259978 In domestic sewage impurities in the form of suspended solid, colloidal material and dissolved materials, are about

1 $0.1 \%$
2 $2.1 \%$
3 $5.0 \%$
4 $10.0 \%$
AMU-2012
Microbes in Human Welfare

259983 Study the following statements and select the incorrect ones?
(i) Physical removal of large and small particles through filtration and sedimentation is called primary sewage treatment
(ii) Secondary sewage treatment is mainly a mechanical process
(iii) Activated sludge sediment in sewage treatment plant is a rich source of aerobic bacteria
(iv) Biogas, commonly called as gobar gas, is pure methane

1 (i) \& (ii) only
2 (ii) \& (iv) only
3 (ii) \& (iii) only
4 (iii) \& (iv) only
AP EAMCET-03.09.2021 Shift-II
Microbes in Human Welfare

259984 The below diagram represents a typical biogas plant. Select the correct option for $A, B$ and $C$ respectively?
original image
Options:

1 $\mathrm{A} \rightarrow$ Sludge, $\mathrm{B} \rightarrow$ Dung + water, $\mathrm{C} \rightarrow$ $\mathrm{CH}_4+\mathrm{CO}_2$
2 $\mathrm{A} \rightarrow$ Dung + water, $\mathrm{B} \rightarrow$ Sludge, $\mathrm{C} \rightarrow$ $\mathrm{CH}_4+\mathrm{CO}_2$
3 A $\rightarrow$ Sludge, $\mathrm{B} \rightarrow \mathrm{CH}_4+\mathrm{CO}_2, \mathrm{C} \rightarrow$ Dung + water
4 $\mathrm{A} \rightarrow \mathrm{CH}_4+\mathrm{CO}_2, \mathrm{~B} \rightarrow$ Dung + water, $\mathrm{C} \rightarrow$ Sludge
AP EAMCET-03.09.2021 Shift-II
Microbes in Human Welfare

259976 Foul smell in the water bodies of tanks, ponds etc. is due to :

1 Aerobiosis
2 Anaerobiosis
3 Psammophytes
4 Biological magnification
Manipal-2004
Microbes in Human Welfare

259979 A sewage treatment process in which a part of decomposer bacteria present in the waste is recycled into the starting of the process is called

1 cyclic treatment
2 activated sludge treatment
3 primary treatment
4 tertiary treatment
DUMET-2009
NEET DIGITAL LIBRARY
Microbes in Human Welfare

259978 In domestic sewage impurities in the form of suspended solid, colloidal material and dissolved materials, are about

1 $0.1 \%$
2 $2.1 \%$
3 $5.0 \%$
4 $10.0 \%$
AMU-2012
Microbes in Human Welfare

259983 Study the following statements and select the incorrect ones?
(i) Physical removal of large and small particles through filtration and sedimentation is called primary sewage treatment
(ii) Secondary sewage treatment is mainly a mechanical process
(iii) Activated sludge sediment in sewage treatment plant is a rich source of aerobic bacteria
(iv) Biogas, commonly called as gobar gas, is pure methane

1 (i) \& (ii) only
2 (ii) \& (iv) only
3 (ii) \& (iii) only
4 (iii) \& (iv) only
AP EAMCET-03.09.2021 Shift-II
Microbes in Human Welfare

259984 The below diagram represents a typical biogas plant. Select the correct option for $A, B$ and $C$ respectively?
original image
Options:

1 $\mathrm{A} \rightarrow$ Sludge, $\mathrm{B} \rightarrow$ Dung + water, $\mathrm{C} \rightarrow$ $\mathrm{CH}_4+\mathrm{CO}_2$
2 $\mathrm{A} \rightarrow$ Dung + water, $\mathrm{B} \rightarrow$ Sludge, $\mathrm{C} \rightarrow$ $\mathrm{CH}_4+\mathrm{CO}_2$
3 A $\rightarrow$ Sludge, $\mathrm{B} \rightarrow \mathrm{CH}_4+\mathrm{CO}_2, \mathrm{C} \rightarrow$ Dung + water
4 $\mathrm{A} \rightarrow \mathrm{CH}_4+\mathrm{CO}_2, \mathrm{~B} \rightarrow$ Dung + water, $\mathrm{C} \rightarrow$ Sludge
AP EAMCET-03.09.2021 Shift-II
Microbes in Human Welfare

259976 Foul smell in the water bodies of tanks, ponds etc. is due to :

1 Aerobiosis
2 Anaerobiosis
3 Psammophytes
4 Biological magnification
Manipal-2004
Microbes in Human Welfare

259979 A sewage treatment process in which a part of decomposer bacteria present in the waste is recycled into the starting of the process is called

1 cyclic treatment
2 activated sludge treatment
3 primary treatment
4 tertiary treatment
DUMET-2009