In a polluted environment, the maximum pollutant will occur in:

In a polluted environment, the maximum pollutant will occur in:
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In a polluted environment, the maximum pollutant will occur in: A. Primary producers B. ... consumers C. Secondary consumers D. Primary consumers.
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Safe limit' called Threshold Limit Value (TLV) of carbon monoxide in atmospheric air is < 50 ppm. The main source of carbon monoxide pollutant in air is the (A) Industrial chimney exhaust (B) Automobiles exhaust (C) Photochemical reaction in polluted atmosphere (D) Burning of domestic fuel

Description : Safe limit' called Threshold Limit Value (TLV) of carbon monoxide in atmospheric air is < 50 ppm. The main source of carbon monoxide pollutant in air is the (A) Industrial chimney exhaust (B) Automobiles exhaust (C) Photochemical reaction in polluted atmosphere (D) Burning of domestic fuel

Last Answer : (B) Automobiles exhaust

In India, 50 % of all sickness and 30 % of all deaths occur due to polluted and contaminated

Description : In India, 50 % of all sickness and 30 % of all deaths occur due to polluted and contaminated

Last Answer : In India, 50 % of all sickness and 30 % of all deaths occur due to polluted and contaminated A. Soil B. Nitrates C. Carbonates D. Phosphates

The presence of pollutants in the environment is usually expressed in ppm, where ppm stands for: (1) particles per mole (2) purity per microgram (3) pollutant prevent measures (4) parts per million

Description : The presence of pollutants in the environment is usually expressed in ppm, where ppm stands for: (1) particles per mole (2) purity per microgram (3) pollutant prevent measures (4) parts per million

Last Answer : (4) parts per million Explanation: PPM is an abbreviation of Parts Per Million. It is commonly used as a measure of small levels of pollutants in air, water, body fluids, etc. Parts per million is the mass ratio between the pollutant component and the solution.

Define the following terms: environment, pollution, pollutant.

Description : Define the following terms: environment, pollution, pollutant.

Last Answer : The natural world that surrounds a living thing is called environment. The environment affects the growth and development of living things. When some unwanted and harmful thing appears in an environment we ... noise' air' water and Land. Anything which harms the environment is called a pollutant.

The presence of pollutants in the environment is usually expressed in ppm, where ppm stands for: (1) particles per mole (2) purity per microgram (3) pollutant prevent measures (4) parts per million

Description : The presence of pollutants in the environment is usually expressed in ppm, where ppm stands for: (1) particles per mole (2) purity per microgram (3) pollutant prevent measures (4) parts per million

Last Answer : parts per million

Which plant has the maximum power of absorbing `CO_(2)` and oxides of nitrogen in a polluted area?

Description : Which plant has the maximum power of absorbing `CO_(2)` and oxides of nitrogen in a polluted area?

Last Answer : Which plant has the maximum power of absorbing `CO_(2)` and oxides of nitrogen in a ... Coleus indica C. Robinia pseudoacacia D. Daucus carota

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.

How is land polluted? -SST 10th

Description : How is land polluted? -SST 10th

Last Answer : . Land is polluted by wastes from nuclear power plants, nuclear and weapon production facilities. . Dumping of wastes, especially glass, harmful chemicals, industrial effluents, packaging, salts and ... into the soil carrying the pollutants to the ground and the groundwater also gets contaminated.

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:

By which is the Atmosphere of big metropolition cities is polluted most? -Do You Know?

Description : By which is the Atmosphere of big metropolition cities is polluted most? -Do You Know?

Last Answer : answer:

Which gas in polluted air reduces the oxygen carrying capacity of blood in human body ?

Description : Which gas in polluted air reduces the oxygen carrying capacity of blood in human body ?

Last Answer : Carbon monoxide gas from polluted air reduces the oxygen carrying capacity of blood in human body.

Which is the most polluted city in the world ?

Description : Which is the most polluted city in the world ?

Last Answer : Dhaka is the most polluted city in the world.

What percentage of people in the world live in polluted air ?

Description : What percentage of people in the world live in polluted air ?

Last Answer : According to Fox News, more than 95% of people live in polluted air. Nine out of ten people live in polluted air, according to the WHO and USA Today .

What is the position of Dhaka among the polluted air cities of the world ?

Last Answer : Dhaka ranks fifth among the world's polluted air cities.

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

One of the most polluted rivers in maharashtra is

Description : One of the most polluted rivers in maharashtra is

Last Answer : One of the most polluted rivers in maharashtra is A. Brahmputra B. Ganga C. Jamnuna D. Panchaganga.

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

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

Last Answer : Assertion : BOD of river polluted by sewage is more than 20 ppm. Reason: Polluted river contains excess ... true but reason is wrong D. Both are wrong

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.

Treatement of polluted water is carried out with the help of

Description : Treatement of polluted water is carried out with the help of

Last Answer : Treatement of polluted water is carried out with the help of A. Lichens B. Fungi C. Ferns D. Phytoplankton.

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.

Atmosphere of big/metropolitan cities is polluted most by

Description : Atmosphere of big/metropolitan cities is polluted most by

Last Answer : Atmosphere of big/metropolitan cities is polluted most by A. Automobile exhausts B. Pesticide residue C. Household waste D. Radio-active fall -out.

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

How does stormwater get polluted?

Description : How does stormwater get polluted?

Last Answer : Usually gets polluted by animal waste, oil leaks, andpesticides.

How does stormwater get polluted?

Description : How does stormwater get polluted?

Last Answer : Usually gets polluted by animal waste, oil leaks, andpesticides.

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)

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.

Minamata disease is a nervous disorder caused by eating fish, polluted with (1) Iron (2) Lead (3) Mercury (4) Nickel

Description : Minamata disease is a nervous disorder caused by eating fish, polluted with (1) Iron (2) Lead (3) Mercury (4) Nickel

Last Answer : (3) Mercury Explanation: Minamata disease is a neurological syndrome caused by severe mercury poisoning Symptoms include ataxia numbness in the hands and feet, general muscle weaknes narrowing of the field of vision and damage to hearing and speech.

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

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

By which is the Atmosphere of big metropolition cities is polluted most?

Description : By which is the Atmosphere of big metropolition cities is polluted most?

Last Answer : Automobile exhausts

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.

Give reason: Most Indian rivers are polluted by industrial effluents.

Description : Give reason: Most Indian rivers are polluted by industrial effluents.

Last Answer : Waste materials from industries containing enormous quantities of chemicals are released into the nearby rivers. Hence most Indian rivers are polluted.

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.

A location with luxuriant growth of lichens on the trees indicates that the (a) trees are very healthy (b) trees are heavily infested (c) location is highly polluted (d) location is not polluted.

Description : A location with luxuriant growth of lichens on the trees indicates that the (a) trees are very healthy (b) trees are heavily infested (c) location is highly polluted (d) location is not polluted.

Last Answer : d) location is not polluted.

Organisms called methanogens are most abundant in a (a) sulphur rock (b) cattle yard (c) polluted stream (d) hot spring.

Description : Organisms called methanogens are most abundant in a (a) sulphur rock (b) cattle yard (c) polluted stream (d) hot spring.

Last Answer : (b) cattle yard

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.

Blood analysis of a patient reveals an unusually high quantity of carboxyhaemoglobin content. Which of the following conclusions is most likely to be correct? The patient has been inhaling polluted air containing unusually high content of (a) carbon disulphide (b) chloroform (c) carbon dioxide (d) carbon monoxide.

Description : Blood analysis of a patient reveals an unusually high quantity of carboxyhaemoglobin content. Which of the following conclusions is most likely to be correct? The patient has been inhaling polluted air ... content of (a) carbon disulphide (b) chloroform (c) carbon dioxide (d) carbon monoxide.

Last Answer : (d) carbon monoxide.

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