Treatement of polluted water is carried out with the help of

Treatement of polluted water is carried out with the help of
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Treatement of polluted water is carried out with the help of A. Lichens B. Fungi C. Ferns D. Phytoplankton.
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54 Pick up the correct statement from the following: A. The ratio of the quantity of the diluting water to that of the sewage, is known as dilution factor B. The automatic purification of polluted water, is known self purification phenomenon C. The photosynthesis is carried out in the presence of sun light D. All the above

Description : 54 Pick up the correct statement from the following: A. The ratio of the quantity of the diluting water to that of the sewage, is known as dilution factor B. The automatic purification of polluted ... phenomenon C. The photosynthesis is carried out in the presence of sun light D. All the above

Last Answer : ANS: D

Suppose a researcher has some prejudices in relation to some problem, then the research carried out by him, is called as Options: A) Value oriented research B) Polluted research C) Inadequate research D) Prejudiced research

Description : Suppose a researcher has some prejudices in relation to some problem, then the research carried out by him, is called as Options: A) Value oriented research B) Polluted research C) Inadequate research D) Prejudiced research

Last Answer : B) Polluted research

The purpose of biological treatement of water -water is to

Description : The purpose of biological treatement of water -water is to

Last Answer : The purpose of biological treatement of water -water is to A. Reduce sedimentation B. Increases sedimentation C. Reduce BOD D. Increase BOD

How easy is it to get treatement for depression?

Description : How easy is it to get treatement for depression?

Last Answer : answer:Getting for and paying for service is one level. For me, that was the easiest step, but for my daughter, the most difficult step. The second step is finding a provider that fits you. If you go ... it easy to get professional help I don't think it is, but the REWARDS are worth every step.

In treatement of waste, biological treatement is

Description : In treatement of waste, biological treatement is

Last Answer : In treatement of waste, biological treatement is A. Primary treatement B. Secondary treatement C. Tertiary treatment D. Reverse osmosis stage.

Compound P on treatement with `CH_(2)N_(2)` (diazomethane) produces compound Q. compound Q on reaction with Hl produces two alkyl iodides R and S . Al

Description : Compound P on treatement with `CH_(2)N_(2)` (diazomethane) produces compound Q. compound Q on reaction with Hl produces two alkyl iodides R and S . Al

Last Answer : Compound P on treatement with `CH_(2)N_(2)` (diazomethane) produces compound Q. compound Q on reaction ... 2-methyl-2-propanol D. 2-methyl-1-propanol

Cyclohexanone oxime is converted into `epsilon`-caprolactam by treatement with

Description : Cyclohexanone oxime is converted into `epsilon`-caprolactam by treatement with

Last Answer : Cyclohexanone oxime is converted into `epsilon`-caprolactam by treatement with A. dil HCl B. `NaOC_(2)H_(5)` C. Ammonia D. conc. `H_(2)SO_(4)`

Ethylidene chloride on treatement with aq. KOH gives

Description : Ethylidene chloride on treatement with aq. KOH gives

Last Answer : Ethylidene chloride on treatement with aq. KOH gives A. `CH_(3)CHO` B. `(CH_(2)OH)_(2)` C. HCHO D. `(CHO)_(2)`

Ethylidene chloride on treatement with aq. KOH gives

Description : Ethylidene chloride on treatement with aq. KOH gives

Last Answer : Ethylidene chloride on treatement with aq. KOH gives A. `CH_(3)CHO` B. `(CH_(2)OH)_(2)` C. HCHO D. `(CHO)_(2)`

Which of the following compounds does not liberate `N_(2)` on treatement with `HNO_(2)`?

Description : Which of the following compounds does not liberate `N_(2)` on treatement with `HNO_(2)`?

Last Answer : Which of the following compounds does not liberate `N_(2)` on treatement with `HNO_(2)`? A. `H_(3)C- ... `H_(3)C-underset(H)underset(|)(N)-CO_(3)`

Coal mines drainage waste water (acidic in nature) results from the earth's water percolating through the voids created in coal bed during mining. This polluted water which either drains out naturally to water courses or are removed before starting the mining is (A) Neutralised by alkali treatment (B) Left as such without any treatment (C) Diluted with fresh water to reduce its acidity (D) None of these

Description : Coal mines drainage waste water (acidic in nature) results from the earth's water percolating through the voids created in coal bed during mining. This polluted water which either drains out naturally to ... without any treatment (C) Diluted with fresh water to reduce its acidity (D) None of these

Last Answer : (A) Neutralised by alkali treatment

Name the diseases caused by drinking polluted water.

Description : Name the diseases caused by drinking polluted water.

Last Answer : There are several diseases that can be caused by drinking polluted water. Some of the most common include: Cholera: a bacterial infection that causes severe diarrhea and dehydration. It is often spread ... clean and safe, either by treating it properly or by using clean and safe sources of water.

I heard a comedian say that "In some countries, people feel lucky if they can get an occassional drink of even polluted water. Yet here in America, we have so much, we PLAY in it in water parks". What do you think about that statement?

Description : I heard a comedian say that "In some countries, people feel lucky if they can get an occassional drink of even polluted water. Yet here in America, we have so much, we PLAY in it in water parks". What do you think about that statement?

Last Answer : I don’t get the joke. It’s true.

Fish die in water bodies polluted by sewage, why? -Do You Know?

Description : Fish die in water bodies polluted by sewage, why? -Do You Know?

Last Answer : answer:

Which river's water is highly polluted ?

Last Answer : The water of Buriganga river is very polluted

Assertion : Plasmodium vivax is responsible for malaria. Reason : Malaria is caused by polluted water.

Description : Assertion : Plasmodium vivax is responsible for malaria. Reason : Malaria is caused by polluted water.

Last Answer : Assertion : Plasmodium vivax is responsible for malaria. Reason : Malaria is caused by polluted water. ... If both the assertion and reason are false

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.

Last Answer : Arrange the following options in ascending order of their BOD value: 1. Sample of highly polluted pond water. 2. Sample ... -b-a C. c-a-b D. a-c-b

Polluted water do not contain

Description : Polluted water do not contain

Last Answer : Polluted water do not contain A. Stone Fly Larvae B. Sewage fungus C. Water Hyacinth D. Cyanobacteria.

Fishes die in water bodies polluted by swage due to :

Description : Fishes die in water bodies polluted by swage due to :

Last Answer : Fishes die in water bodies polluted by swage due to : A. Pathogens B. Clogging of gills by silt C. Reduction in oxygen D. Four smell.

Which of the following is absent in polluted water?

Description : Which of the following is absent in polluted water?

Last Answer : Which of the following is absent in polluted water? A. Hydrilla B. Water hyacinth C. Larva of stone fly D. Blue green algae

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

AIDS is caused by the Human Immunodeficiency Virus (HIV) The transmission of HIV infection generally occurs through. (a) eating contaminated food and water (b) transfusion of contaminated blood and blood products (c) inhaling polluted air (d) shaking hand with infected person

Description : AIDS is caused by the Human Immunodeficiency Virus (HIV) The transmission of HIV infection generally occurs through. (a) eating contaminated food and water (b) transfusion of contaminated blood and blood products (c) inhaling polluted air (d) shaking hand with infected person

Last Answer : Ans:(b)

Fish die in water bodies polluted by sewage, why?

Description : Fish die in water bodies polluted by sewage, why?

Last Answer : Due to Reduction in oxygen

How is ground water polluted?

Description : How is ground water polluted?

Last Answer : Pollutants like lead, arsenic and fluoride combine with hydrogen, oxygen, iron and chlorine in water results in poisoning of ground 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 

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

Which of the following is the use of lichens in case of pollution? (a) They promote pollution. (b) Lichens are not related with pollution. (c) They treat the polluted water. (d) They act as bioindicators of pollutions.

Description : Which of the following is the use of lichens in case of pollution? (a) They promote pollution. (b) Lichens are not related with pollution. (c) They treat the polluted water. (d) They act as bioindicators of pollutions.

Last Answer : (d) They act as bioindicators of pollutions.

Which is not a reason for conservation of water resources. A. The increase in population with the progress of time results in water scarcity. B. Our water resources like the river, lakes etc., are polluted and their water can hardly use without adequate treatment. C. The water demand for industrial use will increase day by day. D. India gets little rain.

Description : Which is not a reason for conservation of water resources. A. The increase in population with the progress of time results in water scarcity. B. Our water resources like the river, lakes etc., are ... C. The water demand for industrial use will increase day by day. D. India gets little rain.

Last Answer : D. India gets little rain.

Iron & manganese present in the polluted water is removed by (A) Simple filtration (B) Oxidation followed by settling & filtration (C) Chemical coagulation (D) Chlorination only

Description : Iron & manganese present in the polluted water is removed by (A) Simple filtration (B) Oxidation followed by settling & filtration (C) Chemical coagulation (D) Chlorination only

Last Answer : (B) Oxidation followed by settling & filtration

Radioactive substances present in the polluted water stream can be removed by (A) Biological oxygen treatment (B) Coagulation and filtration (C) Adsorption in ion exchange materials (D) None of these

Description : Radioactive substances present in the polluted water stream can be removed by (A) Biological oxygen treatment (B) Coagulation and filtration (C) Adsorption in ion exchange materials (D) None of these

Last Answer : (C) Adsorption in ion exchange materials

Aerobic biological oxidation ponds used for the purification of polluted water (A) Destroys/removes pathogen from the sewage (B) Is not very effective for non-biodegradable substances (e.g. ABS) containing effluents (C) Destroys/removes pathogen much more effectively if the sewage is chlorinated (D) All (A), (B) & (C)

Description : Aerobic biological oxidation ponds used for the purification of polluted water (A) Destroys/removes pathogen from the sewage (B) Is not very effective for non-biodegradable substances (e.g. ABS) containing effluents (C) ... much more effectively if the sewage is chlorinated (D) All (A), (B) & (C)

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

Waste/polluted water discharged from electroplating, blast furnace and coal mining industries contain mainly __________ substances. (A) Radioactive (B) Organic (C) Inorganic (D) None of these

Description : Waste/polluted water discharged from electroplating, blast furnace and coal mining industries contain mainly __________ substances. (A) Radioactive (B) Organic (C) Inorganic (D) None of these

Last Answer : (C) Inorganic

Bacterial aerobic oxidation of polluted water in biological oxidation ponds is done to purify it. Presence of bacteria helps in (A) Coagulation and flocculation of colloids (B) Oxidation of carbonaceous matter to CO2 (C) Nitrification or oxidation of ammonia derived from breakdown of nitrogenous organic matter to the nitrite and eventually to the nitrate (D) All (A), (B) and (C)

Description : Bacterial aerobic oxidation of polluted water in biological oxidation ponds is done to purify it. Presence of bacteria helps in (A) Coagulation and flocculation of colloids (B) Oxidation of carbonaceous matter to CO2 (C) ... to the nitrite and eventually to the nitrate (D) All (A), (B) and (C)

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

Replenishment of dissolved oxygen in water stream polluted with industrial waste occurs by (A) Natural aeration of water stream (B) Photosynthetic action of algae (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : Replenishment of dissolved oxygen in water stream polluted with industrial waste occurs by (A) Natural aeration of water stream (B) Photosynthetic action of algae (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

Presence of soluble organics in polluted water causes (A) Undesirable plants growth (B) Depletion of oxygen (C) Fire hazards (D) Explosion hazards

Description : Presence of soluble organics in polluted water causes (A) Undesirable plants growth (B) Depletion of oxygen (C) Fire hazards (D) Explosion hazards

Last Answer : (B) Depletion of oxygen

Which is the best and the most effective method for the removal of organic contaminant present in the polluted water in very small quantity (say < 200 mg/litre)? (A) Lagooning (B) Activated carbon adsorption (C) Biological oxidation pond (D) Chemical coagulation

Description : Which is the best and the most effective method for the removal of organic contaminant present in the polluted water in very small quantity (say < 200 mg/litre)? (A) Lagooning (B) Activated carbon adsorption (C) Biological oxidation pond (D) Chemical coagulation

Last Answer : (B) Activated carbon adsorption

Which is the most practical and economical method for removal of suspended solid matter from polluted water? (A) Sedimentation (B) Skimming off (C) Chlorination (D) Biological oxidation

Description : Which is the most practical and economical method for removal of suspended solid matter from polluted water? (A) Sedimentation (B) Skimming off (C) Chlorination (D) Biological oxidation

Last Answer : (A) Sedimentation

The amount of chemical coagulant added for treatment of polluted water __________ with increase in temperature of the polluted water to be treated. (A) Decreases (B) Increases (C) Remain constant (D) May increase or decrease; depends on the chemical characteristics of polluted water

Description : The amount of chemical coagulant added for treatment of polluted water __________ with increase in temperature of the polluted water to be treated. (A) Decreases (B) Increases (C) Remain constant (D) May increase or decrease; depends on the chemical characteristics of polluted water

Last Answer : (A) Decreases

Biological oxidation ponds remove organic matters present in the polluted water by (A) Using the activities of bacteria and other micro organisms (B) Aerobic oxidation (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : Biological oxidation ponds remove organic matters present in the polluted water by (A) Using the activities of bacteria and other micro organisms (B) Aerobic oxidation (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

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)

Presence of non-biodegradable substances, like alkyl benzene sulphonate (ABS) from the detergents in polluted water stream causes (A) Fire hazards (B) Explosion hazards (C) Persistent foam (D) Depletion of dissolved oxygen

Description : Presence of non-biodegradable substances, like alkyl benzene sulphonate (ABS) from the detergents in polluted water stream causes (A) Fire hazards (B) Explosion hazards (C) Persistent foam (D) Depletion of dissolved oxygen

Last Answer : (C) Persistent foam

What is the major constituents of waste/polluted water discharged from textile, pulp & paper, tanning, distillery, dairy and meat packing industries? (A) Radioactive substances (B) Natural organic products (C) Inorganic pollutants (D) None of these

Description : What is the major constituents of waste/polluted water discharged from textile, pulp & paper, tanning, distillery, dairy and meat packing industries? (A) Radioactive substances (B) Natural organic products (C) Inorganic pollutants (D) None of these

Last Answer : (B) Natural organic products

_______ disease develops on the hands or feet. Sores on the skin become infected with Mycobacterium marinum in polluted water or in infected fish. a. Fish handlers b. Cholera c. Cowpox d. Rotovirus e. Coxsackie

Description : _______ disease develops on the hands or feet. Sores on the skin become infected with Mycobacterium marinum in polluted water or in infected fish. a. Fish handlers b. Cholera c. Cowpox d. Rotovirus e. Coxsackie

Last Answer : a. Fish handlers

Polluted water usually contains coliform bacteria like _____. a. Streptococcus b. Proteus c. Escherichia coli d. Pseudomonas

Description : Polluted water usually contains coliform bacteria like _____. a. Streptococcus b. Proteus c. Escherichia coli d. Pseudomonas

Last Answer : c. Escherichia coli

What is the meaning of brackish water in terms of fisheries? a. Seawater only b. Freshwater only c. Combination of Sea water and Freshwater d. Polluted water

Description : What is the meaning of brackish water in terms of fisheries? a. Seawater only b. Freshwater only c. Combination of Sea water and Freshwater d. Polluted water

Last Answer : c. Combination of Sea water and Freshwater

Check valves are installed (A) On the delivery side of the pumping set (B) At the interconnections between polluted water system and a potable water system (C) Both (a) and (b) (D) Neither (a) nor (b)

Description : Check valves are installed (A) On the delivery side of the pumping set (B) At the interconnections between polluted water system and a potable water system (C) Both (a) and (b) (D) Neither (a) nor (b)

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

For complete stabilisation of organic matter in polluted water, it takes (A) 5 days (B) 10 days (C) 20 days (D) 30 days

Description : For complete stabilisation of organic matter in polluted water, it takes  (A) 5 days  (B) 10 days  (C) 20 days  (D) 30 days 

Last Answer : (D) 30 days 

Write three ways in which water become polluted?

Description : Write three ways in which water become polluted?

Last Answer : Causes of water pollution. ∗ Dirty water from houses and farms. ∗ Waste liquid from factories. ∗ Oil spills from oil tankers at sea.

10. High biological oxygen demand in a water body means ________ a. Water is not polluted b. Water is polluted c. Waterbody contains lots of lifeforms d. None of the above

Description : 10. High biological oxygen demand in a water body means ________ a. Water is not polluted b. Water is polluted c. Waterbody contains lots of lifeforms d. None of the above

Last Answer : Ans: Water is polluted

The Particulate Matter (PM-10) exhaled from the polluted atmosphere is often filtered out during the process of (1) Coughing (2) Sneezing (3) A and B (4) Urination

Description : The Particulate Matter (PM-10) exhaled from the polluted atmosphere is often filtered out during the process of (1) Coughing (2) Sneezing (3) A and B (4) Urination

Last Answer : (2) Sneezing Explanation: PM-10 is a particulate matter having an aerodynamic diameter of less than 10 gym. Particles larger than 10 microns tend to be filtered out in the nose and therefore do not enter the respiratory tract. 926.