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)
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.
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
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
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
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
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
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
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.
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
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
Last Answer : Biochemical oxygen demand
Description : Biochemical Oxygen Demand (BOD) may not be a good index for pollution for water bodies receving effluents from:
Last Answer : Biochemical Oxygen Demand (BOD) may not be a good index for pollution for water bodies receving ... sewage C. Dairy industry D. Petroleum 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
Last Answer : (c) petroleum industry
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
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.
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*
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
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
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
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
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 : (b) consumption of organic matter in the water is higher by the microbes
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)
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
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.
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
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
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
Description : Which tools of the promotional mix is defined as any paid form of nonpersonal presentation and promotion of ideas, goods, or services by an identified sponsor? A. advertising B. public relations C. direct marketing D. sales promotion
Last Answer : A. advertising
Description : Which tool of the promotional mix is defined as any paid form of non-personal presentation and promotion of ideas, goods, or services by an identified sponsor? A. Advertising B. Public relations C. Direct marketing D. Sales promotion
Last Answer : A. Advertising
Description : Michael Porter has identified five forces that determine the intrinsic long-run attractiveness of a market or market segment. Which of the following would NOT be among Porter’s five forces? A. Industry competitors B. Technological partners C. Substitutes D. Buyers E. Potential entrants
Last Answer : B. Technological partners
Description : The goods identified and agreed upon at the time a contract of sale is made are called A. Ordinary goods B. Specified goods C. Scheduled goods D. None of above
Last Answer : B. Specified goods
Description : Full employment is the level at which there is A. Zero unemployment B. Normal rate of unemployment C. Less supply of labor D. Demand for goods is less than supply.
Last Answer : C. Less supply of labor
Description : Consider the following statements : Activated sludge process can be said to comprise : 1. Conversion of dissolved organic matter into biological flocs 2. Removal of dissolved BOD of the waste water 3. Digestion of the sludge Which ... 2 and 3 (b) 1 and 2 only (c) 2 and 3 only (d) 1 and 3 only
Last Answer : (b) 1 and 2 only
Description : What causes pollution A. Human activities B. Trees C. Both of these D. None of these
Last Answer : A. Human activities
Description : Which of the following intellectual disciplines provides absolute proof of its conclusions? A. The social, biological, meteorological, and medical sciences. B. Ethical judgments based on well-reasoned arguments from sound ... , chemistry, and physics. D. All of the above. E. None of the above.
Last Answer : E. None of the above.
Last Answer : E. None of the above
Description : Eutrophication of a water body enhances – (1) Organic matter production (2) Biological oxygen demand (3) Both (1) and (2) (4) Neither (1) nor (2)
Last Answer : (3) Both (1) and (2) Explanation: Eutrophication is the ecosystem response to the addition of artificial or natural substances, such as nitrates and phosphates, through fertilizers or sew-age. It leads not only to increased levels of nutrients, but increased Biological Oxygen Demand as well.
Description : Eutrophication of a water body enhances (1) Organic matter production (2) Biological oxygen demand (3) Both (1) and (2) (4) Neither (1) nor (2)
Last Answer : Both (1) and (2)
Description : The problems for criticism about large dams are that they A. Displace large number of peasants and trebles without proper rehabilitation B. Swallow up huge amounts of public money without the ... Contribute enormously to deforestation and the loss of biological diversity D. All of the above.
Last Answer : D. All of the above.
Description : The problems for criticism about large dams are that they A. Displace large number of peasants and trebles without proper rehabilitation B. Swallow up huge amounts of public money without the ... . Contribute enormously to deforestation and the loss of biological diversity D. All of the above.
Description : The historic convention on Biological Diversity held in Rio de Janeiro in 1992 is known as: A. CITES Convention B. The Earth Summit C. G-16 Summit D. MAB Programme
Last Answer : B. The Earth Summit
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
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