Spraying of DDT on crops causes pollution of __________ (1) Air & Soil (2) Crops & Air (3) Soil & Water (4) Air & Water

Spraying of DDT on crops causes pollution of __________ (1) Air & Soil (2) Crops & Air (3) Soil & Water (4) Air & Water
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Soil & Water
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Spraying of DDT on crops causes pollution of ______. (1) Air & Soil (2) Crops & Air (3) Soil & Water (4) Air & Water

Description : Spraying of DDT on crops causes pollution of ______. (1) Air & Soil (2) Crops & Air (3) Soil & Water (4) Air & Water

Last Answer : (3) Soil & Water Explanation: DDT is a persistent organic pollutant that is readily adsorbed to soils and sediments, which can act both as sinks and as long-term sources of exposure ... the ground water system which contaminates the entire food chain by severely affecting humans dependent on these.

Spraying of DDT produces pollution of a) Air b) Air and Water c) Air and Soil d) Air, Water and Soil.

Description : Spraying of DDT produces pollution of a) Air b) Air and Water c) Air and Soil d) Air, Water and Soil. 

Last Answer : d) Air, Water and Soil.

Spraying of `DDT` produce pollution of the type:

Description : Spraying of `DDT` produce pollution of the type:

Last Answer : Spraying of `DDT` produce pollution of the type: A. Air and water B. Air and soil C. Crops and air D. Soil and water.

Spraying of `DDT` produce pollution of the type:

Description : Spraying of `DDT` produce pollution of the type:

Last Answer : Spraying of `DDT` produce pollution of the type: A. Air B. Air and water C. Air and soil D. Air, water and soil.

Spraying of DDT produces pollution of

Description : Spraying of DDT produces pollution of

Last Answer : Spraying of DDT produces pollution of A. Air only B. Air and soil only C. Air, soil, and water D. Air and water only

What is a bad effect of spraying spraying pesticides on crops?

Description : What is a bad effect of spraying spraying pesticides on crops?

Last Answer : Well, wind drift is going to be a problem, and it kills the bad bugs, but the good ones as well. If anyone is in that field when the crop duster lets his spray go, then one would be ... means following the label directions to the letter! Don't skimp on safety either. Its your health, not mine.

The amount of liquid required for spraying of plantation crops is : a.) 200-400L/ha b.) 400-600L/ha c.) 600-800L/ha d.) 1000-1200L/ha

Description : The amount of liquid required for spraying of plantation crops is : a.) 200-400L/ha b.) 400-600L/ha c.) 600-800L/ha d.) 1000-1200L/ha

Last Answer : d.) 1000-1200L/ha

he amount of liquid required for ground spraying of agricultural crops is : a.) 400-600L/ha b.) 200-400L/ha c.) 1000-2000L/ha d.) 600-800L/ha

Description : he amount of liquid required for ground spraying of agricultural crops is : a.) 400-600L/ha b.) 200-400L/ha c.) 1000-2000L/ha d.) 600-800L/ha

Last Answer : a.) 400-600L/ha

In our country, large patches of forest are being cleared for cultivation of crops . The environmental impact of such practice lead to a) soil erosion b)soil conservation c)soil pollution d)soil fertility

Description : In our country, large patches of forest are being cleared for cultivation of crops . The environmental impact of such practice lead to a) soil erosion b)soil conservation c)soil pollution d)soil fertility

Last Answer : a) soil erosion

Air pollution causes A. Global warming B. Respiratory problems C. Soil erosion D. None of these

Description : Air pollution causes A. Global warming B. Respiratory problems C. Soil erosion D. None of these

Last Answer : B. Respiratory problems

Air pollution causes A. Global warming B. Respiratory problems C. Soil erosion D. None of thesea

Description : Air pollution causes A. Global warming B. Respiratory problems C. Soil erosion D. None of these

Last Answer : B. Respiratory problems

Air pollution causes A. Global warming B. Respiratory problems C. Soil erosion D. None of these

Description : Air pollution causes A. Global warming B. Respiratory problems C. Soil erosion D. None of these

Last Answer : B. Respiratory problems

What causes the young leaves of my plants to become pointed and irregular in shape? I noticed the twisting of the leaves and stems after spraying the plants for the first time.

Description : What causes the young leaves of my plants to become pointed and irregular in shape? I noticed the twisting of the leaves and stems after spraying the plants for the first time.

Last Answer : A. Your tomato plants have been injured by 2,4-D or a similar weed killer. Never use the same sprayer for weed control in your vegetable garden you used on your lawn. Drift from herbicides ... can also injure tomato plants. A virus disease called cucumber mosaic virus (CMV) can mimic these symptoms.

Biomagnification of DDT causes decline in bird population by:

Description : Biomagnification of DDT causes decline in bird population by:

Last Answer : Biomagnification of DDT causes decline in bird population by: A. Bringing disturbance in calcium methabolism ... breaking of eggs D. All the above

Which is correct about statements X and Y statement X. DDT shows biological magnification Statement Y : UV radiations causes ozone depletion .

Description : Which is correct about statements X and Y statement X. DDT shows biological magnification Statement Y : UV radiations causes ozone depletion .

Last Answer : Which is correct about statements X and Y statement X. DDT shows biological magnification Statement Y : UV ... D. X is not correct, Y is correct.

Assertion: Biomagnification of DDT can enhance the decline in bird population. Reason: DDT causes thinning of egg shell and their premature breaking b

Description : Assertion: Biomagnification of DDT can enhance the decline in bird population. Reason: DDT causes thinning of egg shell and their premature breaking b

Last Answer : Assertion: Biomagnification of DDT can enhance the decline in bird population. Reason: DDT causes thinning of ... and Reason are false, then mark (4).

Insulation of liquid surface can be achieved by __________ on top of its surface. (A) Floating hollow polypropylene spheres (B) Spraying alumina powder (C) Putting cement (D) None of these

Description : Insulation of liquid surface can be achieved by __________ on top of its surface. (A) Floating hollow polypropylene spheres (B) Spraying alumina powder (C) Putting cement (D) None of these

Last Answer : (A) Floating hollow polypropylene spheres

Pick out the wrong statement. (A) Loamy soil is the best soil for vigorous plant growth, while the clayey soil is solid and hence the plant roots penetrate with difficulty (B) Large excess use of nitrogenous fertiliser in land causes the problem of diarrhoea and cyanosis (C) Application of large excess of Potassic fertiliser in soil increases the valuable carotene in fruits and vegetables (D) Cereal crops grown on alkaline soil absorb higher amount of fluorides thereby spreading fluorosis

Description : Pick out the wrong statement. (A) Loamy soil is the best soil for vigorous plant growth, while the clayey soil is solid and hence the plant roots penetrate with difficulty (B) Large ... vegetables (D) Cereal crops grown on alkaline soil absorb higher amount of fluorides thereby spreading fluorosis

Last Answer : (C) Application of large excess of Potassic fertiliser in soil increases the valuable carotene in fruits and vegetables

Air can be cooled and dehumidified by A. circulating chilled water in tube across air flow B. placing evaporator coil across air flow C. spraying chilled water to air D. all of the mentioned

Description : Air can be cooled and dehumidified by A. circulating chilled water in tube across air flow B. placing evaporator coil across air flow C. spraying chilled water to air D. all of the mentioned

Last Answer : ANSWER : D

Maximum permissible concentration (i.e. TLV) of DDT in public water supply system is __________ micro gram (μ g)/litre. (A) 22 (B) 42 (C) 332 (D) 1050

Description : Maximum permissible concentration (i.e. TLV) of DDT in public water supply system is __________ micro gram (μ g)/litre. (A) 22 (B) 42 (C) 332 (D) 1050

Last Answer : (B) 42

When using a spray can of compressed air/gas to clean your PC is it harmful to your computer when it comes out liquid when spraying?

Description : When using a spray can of compressed air/gas to clean your PC is it harmful to your computer when it comes out liquid when spraying?

Last Answer : answer:Not really, Just don't hold the can upside down or sideways if you can help it. There is a chance that it can discolor some plastics but otherwise don't worry about it. Duster is ... that is very unlikely. During gaming spec competitions they use liquid nitrogen as a CPU and GPU heatsink.

Which of the following procedures should be used to maintain a large electric motor during periods of inactivity? A. A thin layer of air-drying varnish should be applied on the windings. B. Compressed air should be blown over areas where dust is deposited. C. Spraying a solvent periodically to remove carbon dust. D. Space heaters should be used to prevent condensation of moisture.

Description : Which of the following procedures should be used to maintain a large electric motor during periods of inactivity? A. A thin layer of air-drying varnish should be applied on the windings. B. ... periodically to remove carbon dust. D. Space heaters should be used to prevent condensation of moisture.

Last Answer : Answer: D

Spraying should be done according to thea) direction of air b) direction of wind c) cropping patter

Description : Spraying should be done according to thea) direction of air b) direction of wind c) cropping patter

Last Answer : b) direction of wind

Foam spraying requires special type of nozzle A. Flat fan nozzle B. Flooding nozzle C. Hollow cone nozzle D. Air aspiring nozzle

Description : Foam spraying requires special type of nozzle A. Flat fan nozzle B. Flooding nozzle C. Hollow cone nozzle D. Air aspiring nozzle

Last Answer : D. Air aspiring nozzle

Dichloro diphenyl __________ is the full form of DDT (an insecticide).(A) Tetrachloroethane (B) Trichloroethane (C) Tetrachloromethane (D) Trichloromethane

Description : Dichloro diphenyl __________ is the full form of DDT (an insecticide). (A) Tetrachloroethane (B) Trichloroethane (C) Tetrachloromethane (D) Trichloromethane

Last Answer : (B) Trichloroethane

Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at __________ °C. (A) 15-30 (B) 90-100 (C) 250-300 (D) < 0

Description : Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at __________ °C. (A) 15-30 (B) 90-100 (C) 250-300 (D) < 0

Last Answer : (A) 15-30

'Green House Effect' means - (1) cultivation of crops in green house to conserve heat (2) trapping of solar energy due to carbon dioxide gases (3) trapping of solar energy by earth upper surface (4) increase of heat due to atmospheric pollution

Description : 'Green House Effect' means - (1) cultivation of crops in green house to conserve heat (2) trapping of solar energy due to carbon dioxide gases (3) trapping of solar energy by earth upper surface (4) increase of heat due to atmospheric pollution

Last Answer : (2) trapping of solar energy due to carbon dioxide gases Explanation: Green House Effect is a process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases and is re-radiated in all directions.

‘Green House Effect’ means (1) cultivation of crops in green house to conserve heat (2) trapping of solar energy due to carbon dioxide gases (3) trapping of solar energy by earth upper surface (4) increase of heat due to atmospheric pollution

Description : ‘Green House Effect’ means (1) cultivation of crops in green house to conserve heat (2) trapping of solar energy due to carbon dioxide gases (3) trapping of solar energy by earth upper surface (4) increase of heat due to atmospheric pollution 

Last Answer :  trapping of solar energy due to carbon dioxide gases

Bio-fertilisers are cheaper, renewable and pollution free. They improve the __________ of the soil. (A) Nutrient supply (B) Texture (C) Water holding capacity (D) All (A), (B) and (C)

Description : Bio-fertilisers are cheaper, renewable and pollution free. They improve the __________ of the soil. (A) Nutrient supply (B) Texture (C) Water holding capacity (D) All (A), (B) and (C)

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

Hydroponics is the technique of cultivation of crops in—- a. Water b. Soil c. Air d. None of these

Description : Hydroponics is the technique of cultivation of crops in—- a. Water b. Soil c. Air d. None of these

Last Answer : a. Water

Hydroponics is the technique of cultivation of crops in—- a. Water b. Soil c. Air d. None of these

Description : Hydroponics is the technique of cultivation of crops in—- a. Water b. Soil c. Air d. None of these

Last Answer : a. Water

Benzene is used (A) As a motor fuel (B) As an explosive (C) For making insecticides (e.g., DDT, BHC etc.), detergent & rubber (SBR) (D) As a perfume

Description : Benzene is used (A) As a motor fuel (B) As an explosive (C) For making insecticides (e.g., DDT, BHC etc.), detergent & rubber (SBR) (D) As a perfume

Last Answer : (C) For making insecticides (e.g., DDT, BHC etc.), detergent & rubber (SBR) (D) A

Assertion : Secondary air pollutants are formed by interactin among primary pollutants and are more toxic Reason: DDT is secondary air pollutants

Description : Assertion : Secondary air pollutants are formed by interactin among primary pollutants and are more toxic Reason: DDT is secondary air pollutants

Last Answer : Assertion : Secondary air pollutants are formed by interactin among primary pollutants and are more toxic ... but reason is wrong D. Both are wrong

Which of the following is the leading cause of death and diseases worldwide? A. water pollution B. radioactive pollution C. air pollution D. soil pollution

Description : Which of the following is the leading cause of death and diseases worldwide? A. water pollution B. radioactive pollution C. air pollution D. soil pollution

Last Answer : A. water pollution

Which of the following is the leading cause of death and diseases worldwide? A. water pollution B. radioactive pollution C. air pollution D. soil pollution

Description : Which of the following is the leading cause of death and diseases worldwide? A. water pollution B. radioactive pollution C. air pollution D. soil pollution

Last Answer : A. water pollution

Give reasons for the following observations: (a) The element carbon forms a very large number of compounds. (b) Air holes of a gas burner have to be adjusted when the heated vessels get blackened by the flame. (c) Use of synthetic detergents causes pollution of water. -Chemistry

Description : Give reasons for the following observations: (a) The element carbon forms a very large number of compounds. (b) Air holes of a gas burner have to be adjusted when the heated vessels get blackened by the flame. (c) Use of synthetic detergents causes pollution of water. -Chemistry

Last Answer : Answer. (a) Carbon forms large number of compounds since carbon is small in size and can form stable covalent bonds (catenation) and it shows tetravalency. (b) Air holes of gas burner are ... not get blackened. (c) Some synthetic detergents are non-biodegradable, therefore, cause pollution of water.

Which of the following is a manmade source of air pollution? (A) Automobile exhaust (B) Forest fire (C) Bacterial action in soil and swamp areas (D) All (A), (B) and (C)

Description : Which of the following is a manmade source of air pollution? (A) Automobile exhaust (B) Forest fire (C) Bacterial action in soil and swamp areas (D) All (A), (B) and (C)

Last Answer : (A) Automobile exhaust

Thermal pollution due to excessive heat & temperature in the working place causes (A) Reduction in working efficiency of manpower (B) Fatigue (C) High breathing rate (D) All (A), (B) & (C)

Description : Thermal pollution due to excessive heat & temperature in the working place causes (A) Reduction in working efficiency of manpower (B) Fatigue (C) High breathing rate (D) All (A), (B) & (C)

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

Explain any three causes of air pollution in Calcutta in the nineteenth and early twentieth century. -SST 10th

Description : Explain any three causes of air pollution in Calcutta in the nineteenth and early twentieth century. -SST 10th

Last Answer : The city life of Calcutta was full of contrasts, according to Durgacharan Ray. 1. In the 19 th century, Calcutta was brimming with opportunities - for trade, commerce and jobs. 2. ... - was added by the railways. The body that controlled industrial pollution was Bengal Smoke Nuisance Commission.

State any three causes of air pollution in Calcutta in the 19th century. -SST 10th

Description : State any three causes of air pollution in Calcutta in the 19th century. -SST 10th

Last Answer : (i) Pollution was due to large number of people being dependent on dung and wood as fuel. (ii) Industries and other establishment used steam engines that run on coal and caused air pollution. ... thick smog. (iv) Calcutta had a history of air pollution. Its inhabitants inhaled grey smoke.

Explain any four causes of air pollution in Calcutta in the 19th century and early 20th century. -SST 10th

Description : Explain any four causes of air pollution in Calcutta in the 19th century and early 20th century. -SST 10th

Last Answer : Calcutta in the nineteenth century was a city full of pollution. The industries and the railways were the main pollutants. The city life was very irksome and difficult. The gods in ... with smoke to generate thick smog. Bengal Smoke Nuisance Commission controlled industrial pollution in Bengal.

The major harmful gas emitted by automobile vehicle which causes air pollution is – (1) Carbon Monoxide (2) Methane (3) Carbon dioxide (4) Ozone gas

Description : The major harmful gas emitted by automobile vehicle which causes air pollution is – (1) Carbon Monoxide (2) Methane (3) Carbon dioxide (4) Ozone gas

Last Answer : (1) Carbon Monoxide Explanation: Carbon monoxide is the major harmful gas emitted by the automobile vehicles which causes air pollution. Carbon monoxide (CO) - A product of incomplete combustion, ... overexposure (carbon monoxide poisoning) may be fatal. Carbon Monoxide poisoning is a major killer.

The major harmful gas emitted by automobile vehicles which causes air pollution is – (1) Carbon Monoxide (2) Methane (3) Carbon dioxide (4) Ozone gas

Description : The major harmful gas emitted by automobile vehicles which causes air pollution is – (1) Carbon Monoxide (2) Methane (3) Carbon dioxide (4) Ozone gas

Last Answer : (1) Carbon Monoxide Explanation: Carbon monoxide is the major harmful gas emitted by the automobile vehicles which causes air pollution. Carbon monoxide (CO) - A product of incomplete combustion, ... overexposure (carbon monoxide poisoning) may be fatal. Carbon Monoxide poisoning is a major killer.

An example of an activity which causes indoor air pollution is

Description : An example of an activity which causes indoor air pollution is

Last Answer : cooking / cleaning.

Explain the various causes of air pollution.

Description : Explain the various causes of air pollution.

Last Answer : Coal combustion: Coal is used as a major source of fuel in several industries. Coal combustion releases sulphur dioxide, carbon monoxide and small amounts of carbon dioxide which are ... incineration: Disposing of city garbage by burning them release carbon monoxide which is a pollutant.

Mention the main causes of air pollution.

Description : Mention the main causes of air pollution.

Last Answer : a) Coal combustion b) Diesel combustion c) Petrol combustion d) Smoking of tobacco e) Waste incineration

The major harmful gas emitted by automobile vehicles which causes air pollution is (1) Carbon Monoxide (2) Methane (3) Carbon dioxide (4) Ozone gas

Description : The major harmful gas emitted by automobile vehicles which causes air pollution is (1) Carbon Monoxide (2) Methane (3) Carbon dioxide (4) Ozone gas

Last Answer : Carbon Monoxide

The major harmful gas emitted by automobile vehicle which causes air pollution is (1) Carbon Monoxide (2) Methane (3) Carbon dioxide (4) Ozone gas

Description : The major harmful gas emitted by automobile vehicle which causes air pollution is (1) Carbon Monoxide (2) Methane (3) Carbon dioxide (4) Ozone gas

Last Answer : Carbon dioxide

Ringelmann chart is used for the evaluation of __________ pollution. (A) Air (B) Water (C) Noise (D) Radioactive

Description : Ringelmann chart is used for the evaluation of __________ pollution. (A) Air (B) Water (C) Noise (D) Radioactive

Last Answer : (A) Air

From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm. (A) 5 (B) 50 (C) 500 (D) 5000

Description : From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm. (A) 5 (B) 50 (C) 500 (D) 5000

Last Answer : (A) 5