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

Biochemical Oxygen Demand (BOD) may not be a good index for pollution for water bodies receving effluents from:
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Biochemical Oxygen Demand (BOD) may not be a good index for pollution for water bodies receving ... sewage C. Dairy industry D. Petroleum industry
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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

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

The term Biological Oxygen Demand (BOD) is used in relation to (A) Potable water (B) Cooling water (C) Distilled water (D) Industrial effluents

Description : The term Biological Oxygen Demand (BOD) is used in relation to (A) Potable water (B) Cooling water (C) Distilled water (D) Industrial effluents

Last Answer : (D) Industrial effluents

Biochemical oxygen demand (BOD) in a river water

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

Last Answer : Biochemical oxygen demand (BOD) in a river water A. Increases when sewage gets mixed with river ... water D. Gives a measure of Salmonella in water

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 

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

72. Measuring Biochemical Oxygen Demand (BOD) is a method used for (1) Working out the efficiency of R.B.Cs. about their capacity to carry oxygen (2) Estimating the amount of organic matter is sewage water (3) Working out the efficiency of oil driven automobile engines (4) Measuring the activity of Sacccharomyces cerevisae in producing curd on a commercial scale

Description : 72. Measuring Biochemical Oxygen Demand (BOD) is a method used for (1) Working out the efficiency of R.B.Cs. about their capacity to carry oxygen (2) Estimating the amount of ... driven automobile engines (4) Measuring the activity of Sacccharomyces cerevisae in producing curd on a commercial scale

Last Answer : Estimating the amount of organic matter is sewage water

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. Highly polluted water B. Less ... in water C. Less sewage D. Less microorganisms.

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

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

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

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

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.

Biochemical Oxygen Demand (BOD) of sewage is the (a) Oxygen required to oxidise (b) Oxygen required to oxidise biologically inactive organic matter* (c) a and b both (d) none of these

Description : Biochemical Oxygen Demand (BOD) of sewage is the (a) Oxygen required to oxidise (b) Oxygen required to oxidise biologically inactive organic matter* (c) a and b both (d) none of these

Last Answer : (b) Oxygen required to oxidise biologically inactive organic matter*

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

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

Last Answer : Biochemical oxygen demand

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

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.

Description : 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.

Last Answer : C. Both (a) and (b)

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.

Description : 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.

Last Answer : C. Both (a) and (b)

The primary source of organic pollution in fresh water bodies is (A) run-off urban areas (B) run-off from agricultural forms (C) sewage effluents (D) industrial effluents

Description : The primary source of organic pollution in fresh water bodies is (A) run-off urban areas (B) run-off from agricultural forms (C) sewage effluents (D) industrial effluents

Last Answer : (C) sewage effluents

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

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

Last Answer : C. Both (a) and (b)

The BOD values of water indicate the (1) amount of organic debris (2) amount of oxygen used for biochemical oxidation (3) amount of oxygen used for biochemical reduction (4) amount of ozone used for biochemical oxidation

Description : The BOD values of water indicate the (1) amount of organic debris (2) amount of oxygen used for biochemical oxidation (3) amount of oxygen used for biochemical reduction (4) amount of ozone used for biochemical oxidation

Last Answer : amount of oxygen used for biochemical oxidation

In the context of the chemical process industries, the term BOD is normally associated with the (A) Characterisation of solid wastes (B) Organic concentration in gaseous effluents (C) Characterisation of liquid effluents (D) Characterisation of boiler feed water

Description : In the context of the chemical process industries, the term BOD is normally associated with the (A) Characterisation of solid wastes (B) Organic concentration in gaseous effluents (C) Characterisation of liquid effluents (D) Characterisation of boiler feed water

Last Answer : (C) Characterisation of liquid effluents

Which of the following processes is involved in the biochemical treatment of sewage effluents? (A) Oxidation (B) Reduction (C) Dehydration (D) Fermentation

Description : Which of the following processes is involved in the biochemical treatment of sewage effluents? (A) Oxidation (B) Reduction (C) Dehydration (D) Fermentation

Last Answer : (A) Oxidation

The biochemical treatment applied to sewage effluents is a process of (A) Dehydration (B) Reduction (C) Oxidation (D) Polymerisation

Description : The biochemical treatment applied to sewage effluents is a process of (A) Dehydration (B) Reduction (C) Oxidation (D) Polymerisation

Last Answer : (C) Oxidation

Pick out the correct statement. (A) Chemical oxygen demand (COD) is a measure of chemically oxidisable organic matter present in water (B) COD is determined by oxidising the organic matter present in water with potassium dichromate in cone, sulphuric acid solution at boiling temperature for specified time (C) COD is related to BOD of a given waste in water but the relationship varies for different wastes. Typically COD of potable water may be 1-2 mg/litre (D) All (A), (B) and (C)

Description : Pick out the correct statement. (A) Chemical oxygen demand (COD) is a measure of chemically oxidisable organic matter present in water (B) COD is determined by oxidising the organic matter present in water with potassium dichromate ... of potable water may be 1-2 mg/litre (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

(2) amount of oxygen used for biochemical oxidation Explanation: Biochemical oxygen demand or B.O.D. is the amount of dissolved oxygen needed by aerobic biological organisms in a body of water to break down organic material present in a given water sample at certain temperature over a specific time period. The term also refers to a chemical procedure for determining this amount. This is not a precise quantitative test, although it is widely used as an indication of the organic quality of water.

Description : (2) amount of oxygen used for biochemical oxidation Explanation: Biochemical oxygen demand or B.O.D. is the amount of dissolved oxygen needed by aerobic biological organisms in a body of water to ... quantitative test, although it is widely used as an indication of the organic quality of water.

Last Answer : The addition of gypsum to port-land cement helps in : (1) increasing the strength of cement (2) rapid setting of cement (3) preventing rapid setting of cement (4) reduction in the cost of cement

Biochemical Oxygen Demand (B.O.D.) of safe drinking water must be (A) Nil (B) 5 (C) 10 (D) 15

Description : Biochemical Oxygen Demand (B.O.D.) of safe drinking water must be  (A) Nil  (B) 5  (C) 10  (D) 15 

Last Answer : (A) Nil 

Pick out the wrong statement.(A) Biological oxygen demand (BOD) is a characteristic and not a constituent of water (B) BOD is a measure of the amount of oxygen which will be demanded & used in 5 days by the biological decomposition of the organic matter present in water stream present as food for the living organism (C) BOD is expressed in mg/litre (typically, BOD=2.5 mg/litre for potable water) (D) None of these

Description : Pick out the wrong statement. (A) Biological oxygen demand (BOD) is a characteristic and not a constituent of water (B) BOD is a measure of the amount of oxygen which will be demanded & used in 5 days ... BOD is expressed in mg/litre (typically, BOD=2.5 mg/litre for potable water) (D) None of these

Last Answer : (D) None of these

What are the steps taken before releasing the industrial effluents into water bodies?

Description : What are the steps taken before releasing the industrial effluents into water bodies?

Last Answer : a) Industrial effluents must be treated to remove the pollutants. b) Toxic chemical substances must be eliminated. c) Acid and alkalies must be neutralized. d) Metallic compounds must be precipitated

Biochemical oxygen demand measures:

Description : Biochemical oxygen demand measures:

Last Answer : Biochemical oxygen demand measures: A. Industrial pollution B. Air pollution C. Dissolved ... for decomposers D. Pollution capacity of effluents

5 days-biochemical oxygen demand (BOD5) is taken at a temperature of A. 0°C B. 15°C C. 20°C D. 25°C

Description : 5 days-biochemical oxygen demand (BOD5) is taken at a temperature of A. 0°C B. 15°C C. 20°C D. 25°C

Last Answer : ANS: C

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

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

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

Last Answer : Drained sewage has biological oxygen demand `(BOD)`: A. More than that of water B. Less than that of ... equal to that of water D. None of the above

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

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

The ratio of oxygen available to the oxygen required for stabilisation of sewage is called the (A) Bacterial stability factor (B) Relative stability (C) Biological oxygen demand (BOD) (D) Oxygen ion concentration

Description : The ratio of oxygen available to the oxygen required for stabilisation of sewage is called the (A) Bacterial stability factor (B) Relative stability (C) Biological oxygen demand (BOD) (D) Oxygen ion concentration

Last Answer : (B) Relative stability

Use of chlorine in the treatment of sewage (A) Helps in grease separation (B) Increases the biological oxygen demand (BOD) (C) Causes bulking of activated sludge (D) Aids in flocculation

Description : Use of chlorine in the treatment of sewage (A) Helps in grease separation (B) Increases the biological oxygen demand (BOD) (C) Causes bulking of activated sludge (D) Aids in flocculation

Last Answer : (A) Helps in grease separation

Which one of the following weeds is effective in controlling water pollution caused by industrial effluents? (1) Parthenium (2) Elephant grass (3) Water hycinth (4) Molar grass

Description : Which one of the following weeds is effective in controlling water pollution caused by industrial effluents? (1) Parthenium (2) Elephant grass (3) Water hycinth (4) Molar grass

Last Answer : (3) Water hycinth Explanation: Water hyacinth (Eichhornia crassipes) is used for purifying not only domestic wastewater but also industrial wastewater. It can readily absorb, accumulate and ... hyacinth can remove even radioactive metals from industrial effluents, which is very difficult otherwise.

Which of the following weeds has been found useful to check water pollution caused by industrial effluents? (1) Partheniurn (2) Elephant grass (3) Water hyacinth (4) Both (1) and (2)

Description : Which of the following weeds has been found useful to check water pollution caused by industrial effluents? (1) Partheniurn (2) Elephant grass (3) Water hyacinth (4) Both (1) and (2)

Last Answer : (4) Both (1) and (2) Explanation: Parthenium and Elephant grass are useful to check water pollution caused by industrial effluents.

Which one of the following weeds is effective in controlling water pollution caused by industrial effluents? (1) Parthenium (2) Elephant grass (3) Water hycinth (4) Mogar grass

Description : Which one of the following weeds is effective in controlling water pollution caused by industrial effluents? (1) Parthenium (2) Elephant grass (3) Water hycinth (4) Mogar grass

Last Answer : Water hycinth

Domestic waste constitutes (a) non-biodegradable pollution (b) biodegradable pollution (c) effluents (d) air pollution.

Description : Domestic waste constitutes (a) non-biodegradable pollution (b) biodegradable pollution (c) effluents (d) air pollution.

Last Answer : (b) biodegradable pollution

Can i send emails to my .mac account from my iphone wothout receving any mail. If so how would i set it up?

Description : Can i send emails to my .mac account from my iphone wothout receving any mail. If so how would i set it up?

Last Answer : Not sure if this will do the trick, but check out tuaw.com and look for the post (dated 8/15/07) on "the perfect iphone e-mail setup." The post deals specifically with gmail, but maybe you can adopt the recommendations.

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

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 into ... `lt` 3 ppm D. `lt` 10 ppm

Pick out the wrong statement. (A) Biological oxygen demand (B.O.D.) value of a sewerage sample is always lower than its chemical oxygen demand (C.O.D.) value (B) Environmental pollution by NOx emission is much higher by four stroke petrol engines as compared to the two stroke engines (C) Temperature in stratosphere rises with increasing altitude (D) The characteristic of a green house body is that it allows the long wavelength incoming solar radiation to come in but does not allow the short wavelength infra red radiation to escape out of the earth's atmosphere

Description : Pick out the wrong statement. (A) Biological oxygen demand (B.O.D.) value of a sewerage sample is always lower than its chemical oxygen demand (C.O.D.) value (B) Environmental pollution by ... in but does not allow the short wavelength infra red radiation to escape out of the earth's atmosphere

Last Answer : (D) The characteristic of a green house body is that it allows the long wavelength incoming solar radiation to come in but does not allow the short wavelength infra red radiation to escape out of the earth's atmosphere

Lagoons used for purification of polluted water (A) Are large shallow artificial lakes also known as clarification lakes, maturation ponds or oxidation ponds (B) Use micro-organisms/bacteria in presence of dissolved oxygen (C) Gives an excellent final effluent (with 3 to 4 lagoons arranged in series) having suspended solid < 1 mg/litre and BOD = 3.8 mg/litre (D) All (A), (B) & (C)

Description : Lagoons used for purification of polluted water (A) Are large shallow artificial lakes also known as clarification lakes, maturation ponds or oxidation ponds (B) Use micro-organisms/bacteria in presence of dissolved oxygen (C) Gives an ... 1 mg/litre and BOD = 3.8 mg/litre (D) All (A), (B) & (C)

Last Answer : (D) All (A), (B) & (C)

8. If pollutants are added continuously in a water body they will cause a) increase in BOD b) decrease in BOD c) death of all plants d) increase in oxygen concentration

Description : 8. If pollutants are added continuously in a water body they will cause a) increase in BOD b) decrease in BOD c) death of all plants d) increase in oxygen concentration

Last Answer : a) increase in BOD

The reaction between oxygen and organic material is a/an __________ reaction. (A) Exothermic (B) Endothermic (C) Biochemical (D) Photochemical

Description : The reaction between oxygen and organic material is a/an __________ reaction. (A) Exothermic (B) Endothermic (C) Biochemical (D) Photochemical

Last Answer : (A) Exothermic