What is the maximum acceptable level of BOD ?

What is the maximum acceptable level of BOD ?
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1 Answer

Answer :

1-2 ppm = Very good 3-5 ppm = Good 8-9 ppm = Contaminated ≥ 100 ppm = Very corrupt
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BOD level in fresh water should not exceed beyond:

Description : BOD level in fresh water should not exceed beyond:

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Water pollution can be identified by testing its A. PH level B. Biological Oxygen Demand (BOD) C. Both (a) and (b) D. None of these.

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Expand BOD AND IPM -Science

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Last Answer : answer:

What is BOD ?

Description : What is BOD ?

Last Answer : Total amount of O2 to kill digestible organic matter in bacteria in 1 liter of water .

What is the unit of BOD ?

Description : What is the unit of BOD ?

Last Answer : mg / liter or ppm

What does BOD mean ?

Description : What does BOD mean ?

Last Answer : BOD is: Biological Oxygen Demand. BOD means the demand for biochemical oxygen. If the BOD value in the water is high then the water is contaminated.

What is the full form of bod ?

Last Answer : full biological oxygen demand of BOD

Biochemical Oxygen Demand (BOD) may not be a good index for pollution for water bodies receving effluents from:

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Relationship between DO and BOD is that they:

Description : Relationship between DO and BOD is that they:

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Assertion : BOD of river polluted by sewage is more than 20 ppm. Reason: Polluted river contains excess of organic matter.

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Assertion: Amount of biodegradable organic matter present in water is measured by BOD of water Reason: During biodegradation of organic compounds. Oxy

Description : Assertion: Amount of biodegradable organic matter present in water is measured by BOD of water Reason: During biodegradation of organic compounds. Oxy

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The BOD of an eutrophic lake will be:

Description : The BOD of an eutrophic lake will be:

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Arrange the following options in ascending order of their BOD value: 1. Sample of highly polluted pond water. 2. Sample from unpolluted pond water. 3.

Description : Arrange the following options in ascending order of their BOD value: 1. Sample of highly polluted pond water. 2. Sample from unpolluted pond water. 3.

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High value of BOD (Biochemical Oxygen Demand) indicates that:

Description : High value of BOD (Biochemical Oxygen Demand) indicates that:

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Which is correct ascending arragement of BOD of sewage (S) distillery effluent (DE). Paper mill effluent (PE) and sugar mill effluent (SE)

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Limit of BOD prescribed by Central Pollution Control Board for the discharge of industrial and muncipal waste water into natural surface water:

Description : Limit of BOD prescribed by Central Pollution Control Board for the discharge of industrial and muncipal waste water into natural surface water:

Last Answer : Limit of BOD prescribed by Central Pollution Control Board for the discharge of industrial and muncipal waste water ... C. lt 30 ppm D. lt 100 ppm

BOD is meausre of

Description : BOD is meausre of

Last Answer : BOD is meausre of A. Industrial waste being poured in water body B. Extent of pollution with organic ... (2)` required by green plants during night .

A water body has high BOD indicating that water is

Description : A water body has high BOD indicating that water is

Last Answer : A water body has high BOD indicating that water is A. Being contaminated with sewage B. Being aerated C. Receiving minerals D. Atrophic.

BOD (biological oxygen demand) is

Description : BOD (biological oxygen demand) is

Last Answer : BOD (biological oxygen demand) is A. Amount of oxygen consumed by microorganisms for decaying organic ... plants for survival D. None of the above

What is BOD is

Description : What is BOD is

Last Answer : BOD is A. Biological oxygen deficit B. Biosphere oxygen demand C. Biological oxygen demand D. None of the above

Drained sewage has biological oxygen demand `(BOD)`:

Description : Drained sewage has biological oxygen demand `(BOD)`:

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When huge amount of sewage is dumped into a river the BOD will:

Description : When huge amount of sewage is dumped into a river the BOD will:

Last Answer : When huge amount of sewage is dumped into a river the BOD will: A. Increases B. Decreases C. Slightly decreases D. remains unchanged.

High value of BOD (Biochemical Oxygen Demand) indicates that:

Description : High value of BOD (Biochemical Oxygen Demand) indicates that:

Last Answer : High value of BOD (Biochemical Oxygen Demand) indicates that: A. consumption of organic matter in ... is highly polluted D. water is less polluted

Measuring Biochemical Oxygen Demand (BOD) is a method used for:

Description : Measuring Biochemical Oxygen Demand (BOD) is a method used for:

Last Answer : Measuring Biochemical Oxygen Demand (BOD) is a method used for: A. Measuring the activity of ... out the efficiency of oil driven automobile engines

Biochemical oxygen demand (BOD) in a river water

Description : Biochemical oxygen demand (BOD) in a river water

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Limit of BOD prescribed by Central Pollution Control Board for the discharge of industrial and muncipal waste water into natural surface water:

Description : Limit of BOD prescribed by Central Pollution Control Board for the discharge of industrial and muncipal waste water into natural surface water:

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Increase in the BOD of water reservoir is due to

Description : Increase in the BOD of water reservoir is due to

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What is What is BOD?

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The major source of BOD in the river Ganga is

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Biological oxygen demand (BOD) is a measure of

Description : Biological oxygen demand (BOD) is a measure of

Last Answer : Biological oxygen demand (BOD) is a measure of A. Industrial wastes poured into water bodies ... Amount of oxygen needed by green plants during night

High BOD indicates

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High value of BOD (Biochemical Oxygen Demand) indicates that:

Description : High value of BOD (Biochemical Oxygen Demand) indicates that:

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Biological Oxygen Demand (BOD) is a measure of: a. Industrial wastes poured into water bodies b. Extent to which water is polluted with organic compounds c. Amount of carbon monoxide inseparably combined with haemoglobin d. Amount of oxygen needed by green plants during night

Description : Biological Oxygen Demand (BOD) is a measure of: a. Industrial wastes poured into water bodies b. Extent to which water is polluted with organic compounds c. Amount of carbon monoxide inseparably combined with haemoglobin d. Amount of oxygen needed by green plants during night

Last Answer : Ans: A

BOD stands for : (1) Biological oxidation demand (2) Biological oxygen demand (3) Biochemical oxygen demand (4) Biotic oxidation demand

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Last Answer : (3) Biochemical oxygen demand Explanation: BOD stands for Biochemical Oxygen Demand. It is the amount of dissolved oxygen needed by aerobic biological organisms to break down organic material present in a ... in milligrams of oxygen consumed per litre of sample during 5 days of incubation at 20°C.

3.0 ml of raw sewage is diluted to 300 ml. The D.O. concentration of the diluted sample at the beginning of the test was 8 mg/l. After 5 dayincubation at 20°C, the D.O. concentration was 5 mg/l. The BOD of raw sewerage is A. 100 mg/l B. 200 mg/l C. 300 mg/l D. 400 mg/l

Description : 3.0 ml of raw sewage is diluted to 300 ml. The D.O. concentration of the diluted sample at the beginning of the test was 8 mg/l. After 5 dayincubation at 20°C, the D.O. concentration was 5 mg/l. The BOD of raw sewerage is A. 100 mg/l B. 200 mg/l C. 300 mg/l D. 400 mg/l

Last Answer : ANS: C

Bio-chemical oxygen demand (BOD) for the first 20 days in generally referred to A. Initial demand B. First stage demand C. Carbonaceous demand D. All of these

Description : Bio-chemical oxygen demand (BOD) for the first 20 days in generally referred to A. Initial demand B. First stage demand C. Carbonaceous demand D. All of these

Last Answer : ANS: D

If a 2% solution of sewage sample is incubated for 5 days at 20°C and the dissolved oxygen depletion was found to be 8 mg/l. The BOD of the sewage is A. 100 mg/l B. 200 mg/l C. 300 mg/l D. 400 mg/l

Description : If a 2% solution of sewage sample is incubated for 5 days at 20°C and the dissolved oxygen depletion was found to be 8 mg/l. The BOD of the sewage is A. 100 mg/l B. 200 mg/l C. 300 mg/l D. 400 mg/l

Last Answer : ANS: D

Force of attraction between any two bod- ies in the universe is called?

Description : Force of attraction between any two bod- ies in the universe is called?

Last Answer : Gravitation

What is BOD?

Description : What is BOD?

Last Answer : Biochemical Oxygen Demand

Write a note on Biological Oxygen Demands (BOD)

Description : Write a note on Biological Oxygen Demands (BOD) 

Last Answer : It is a measure of water pollution level due to sewage and other organic matter. Biological oxygen demands {BOD} is the amount of oxygen needed by microbs to decompose the organic matters of water in ... amount of sewage waste in water create at high BOD, which robs the water of dissolved oxygen.  

Biochemical oxygen demand (BOD) in a river water (a) has no relationship with concentration of oxygen in the water (b) gives a measure of Salmonella in the water (c) increases when sewage gets mixed with river water (d) remains unchanged when algal bloom occurs.

Description : Biochemical oxygen demand (BOD) in a river water (a) has no relationship with concentration of  oxygen in the water (b) gives a measure of Salmonella in the water (c) increases when sewage gets mixed with river  water (d) remains unchanged when algal bloom occurs.

Last Answer : (c) increases when sewage gets mixed with river  water

Measuring Biochemical Oxygen Demand (BOD) is a method used for (a) estimating the amount of organic matter in sewage water (b) working out the efficiency of oil driven automobile engines (c) measuring the activity of Saccharomyces cerevisiae in producing curd on a commercial scale (d) working out the efficiency of RBCs about their capacity to carry oxygen.

Description : Measuring Biochemical Oxygen Demand (BOD) is  a method used for  (a) estimating the amount of organic matter in  sewage water (b) working out the efficiency of oil driven  automobile engines ... commercial  scale (d) working out the efficiency of RBCs about their  capacity to carry oxygen.

Last Answer : (a) estimating the amount of organic matter in  sewage water

High value of BOD (Biochemical Oxygen Demand) indicates that (a) water is less polluted (b) consumption of organic matter in the water is higher by the microbes (c) water is pure (d) water is highly polluted.

Description : High value of BOD (Biochemical Oxygen Demand)  indicates that (a) water is less polluted (b) consumption of organic matter in the water is  higher by the microbes  (c) water is pure (d) water is highly polluted.

Last Answer : (b) consumption of organic matter in the water is 

Biochemical Oxygen Demand (BOD) may not be a good index for pollution for water bodies receiving effluents from (a) domestic sewage (b) dairy industry (c) petroleum industry (d) sugar industry.

Description : Biochemical Oxygen Demand (BOD) may not be a  good index for pollution for water bodies receiving  effluents from (a) domestic sewage (b) dairy industry (c) petroleum industry (d) sugar industry.

Last Answer : c) petroleum industry

Measuring Biochemical Oxygen Demand (BOD) is a method used for (a) estimating the amount of organic matter in sewage water (b) working out the efficiency of oil driven automobile engines (c) measuring the activity of Saccharomyces cerevisiae in producing curd on a commercial scale (d) working out the efficiency of RBCs about their capacity to carry oxygen.

Description : Measuring Biochemical Oxygen Demand (BOD) is a method used for (a) estimating the amount of organic matter in sewage water (b) working out the efficiency of oil driven automobile engines (c) ... a commercial scale (d) working out the efficiency of RBCs about their capacity to carry oxygen.

Last Answer : (a) estimating the amount of organic matter in sewage water

High value of BOD (Biochemical Oxygen Demand) indicates that (a) water is less polluted (b) consumption of organic matter in the water is higher by the microbes (c) water is pure (d) water is highly polluted.

Description : High value of BOD (Biochemical Oxygen Demand) indicates that (a) water is less polluted (b) consumption of organic matter in the water is higher by the microbes (c) water is pure (d) water is highly polluted.

Last Answer : (b) consumption of organic matter in the water is higher by the microbes

Biochemical Oxygen Demand (BOD) may not be a good index for pollution for water bodies receiving effluents from (a) domestic sewage (b) dairy industry (c) petroleum industry (d) sugar industry.

Description : Biochemical Oxygen Demand (BOD) may not be a good index for pollution for water bodies receiving effluents from (a) domestic sewage (b) dairy industry (c) petroleum industry (d) sugar industry.

Last Answer : (c) petroleum industry