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

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

d) Air, Water and Soil.
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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 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 : Soil & Water

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

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.

First bionisecticide developed on commercial scale was: (a) Quinine (b) DDT (c) Organophosphates (d) Sporeine

Description : First bionisecticide developed on commercial scale was: (a) Quinine (b) DDT (c) Organophosphates (d) Sporeine

Last Answer : Ans. ((d))

Pesticide responsible for Ozone depletion is a) BHC b) DDT c) Melathion d) None of the above.

Description : Pesticide responsible for Ozone depletion is a) BHC b) DDT c) Melathion d) None of the above.

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Description : Anxiety and stress are caused by a) Air pollution b) Noise pollution c) Water pollution d) Nuclear pollution

Last Answer : b) Noise pollution

Air pollution effects are usually found on a) Flowers b) Leaves c) Stems d) Roots.

Description : Air pollution effects are usually found on a) Flowers b) Leaves c) Stems d) Roots.

Last Answer : b) Leaves

Thermal pollution is more common near a) Hot water springs b) Coal based power plants c) Tropical regions d) Temperate regions.

Description : Thermal pollution is more common near a) Hot water springs b) Coal based power plants c) Tropical regions d) Temperate regions. 

Last Answer : b) Coal based power plants 

Sound becomes hazardous noise pollution at level a) Above 30 dB b) Above 80 dB c) Above 100 dB d) Above 120 dB.

Description : Sound becomes hazardous noise pollution at level a) Above 30 dB b) Above 80 dB c) Above 100 dB d) Above 120 dB.

Last Answer : b) Above 80 dB

Noise Pollution is measured in a) Hertz b) Fathoms c) Manometers d) Decibels.

Description : Noise Pollution is measured in a) Hertz b) Fathoms c) Manometers d) Decibels. 

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Increasing high skin cancer and high mutation rate are a) O3 depletion b) Acid rain c) CO pollution d) CO2 Pollution.

Description : Increasing high skin cancer and high mutation rate are a) O3 depletion b) Acid rain c) CO pollution d) CO2 Pollution.

Last Answer : a) O3 depletion

SO2 pollution causes a) Plasmolysis b) Destruction of cell wall c) Destruction of Golgi bodies

Description : SO2 pollution causes a) Plasmolysis b) Destruction of cell wall c) Destruction of Golgi bodies

Last Answer : c) Destruction of Golgi bodies

Lichens indicate pollution by a) O3 b) SO2 c) NO2 d) CO.

Description : Lichens indicate pollution by a) O3 b) SO2 c) NO2 d) CO.

Last Answer : b) SO2

SO2 and NO2 Produce pollution by increasing a) Alkalinity b) Acidity c) Neutrality d) Buffer action.

Description : SO2 and NO2 Produce pollution by increasing a) Alkalinity b) Acidity c) Neutrality d) Buffer action.

Last Answer : b) Acidity

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Last Answer : c) Seed-borne disease

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Description : Which plant produces flowers ?

Last Answer : Florigen produces flowers of plants.

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Description : Pick out the wrong statement. (A) Catalytic hydrogenation of carbon monoxide produces methyl alcohol (B) In nylon-6, the number 6 represents the total number of carbon atoms in the ring (C ... are benzene and chlorine (D) Ethanolamines are produced by using ammonia and ethylene oxide as raw material

Last Answer : (C) Raw materials for DDT manufacture are benzene and chlorine

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

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Thermal algae can live in: (a) Saline soil (b) Hot water streams of 70°C (C) Deserts (d) Snow balls

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Minerals in soil body come from a. Weathering of rocks b. Wind and water c. Rains d. Dead organic remains

Description : Minerals in soil body come from a. Weathering of rocks b. Wind and water c. Rains d. Dead organic remains

Last Answer : a. Weathering of rocks

Pudding is done to a) Reduce percolation of water b) Pulverise and levelling soil c) Kill weeds D) All of the above

Description : Pudding is done to a) Reduce percolation of water b) Pulverise and levelling soil c) Kill weeds D) All of the above 

Last Answer : D) All of the above 

The process by which nutrient chemicals or contaminants are dissolved and carried away by water, or are moved into a lower layer of soil a) Mulching b) Desertification c) Incineration d) Leaching

Description : The process by which nutrient chemicals or contaminants are dissolved and carried away by water, or are moved into a lower layer of soil a) Mulching b) Desertification c) Incineration d) Leaching

Last Answer : d) Leaching

Water logging of soil makes it physiologically dry because- (a) This condition does not allow the capillary force to work b) this condition does not allow oxygen to enter the soil C) both (a) and (b) d) none of these

Description : Water logging of soil makes it physiologically dry because- (a) This condition does not allow the capillary force to work b) this condition does not allow oxygen to enter the soil C) both (a) and (b) d) none of these 

Last Answer : b) this condition does not allow oxygen to enter the soil

Soil salinity is measured by: (a) Potometer (b) Porometer (c) Conductivity meter (d) Calorimeter

Description : Soil salinity is measured by: (a) Potometer (b) Porometer (c) Conductivity meter (d) Calorimeter

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Insectivorous plants grow in: (a) Nitrogen rich soil (b) Nitrogen deficient soil (c) Potassium deficient soil (d) Carbohydrate rich soil

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A low branch with a node is bent down and covered with soil in a) Marcotting b) Layering c)Cutting d) Budding

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Mycorrhizae is associated with the following a) Formation of root nodules b) Hyphae penetrating the soil c) Found mostly in lower plants d) Soil erosion

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Chief function of phloem is conduction of: (a) Food (b) Minerals (c) Water (d) Air

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Air spaces are present in (a) Hydrophytes (b) Xerophytes (c) Mesophytes (d) Al1these

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Description : Chief air pollutant which is likely to deplete ozone layer is a) Sulphur dioxide b) Carbon dioxide c) Carbon monoxide d) Nitrogen oxides and Fluorocarbons.

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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

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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.

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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

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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

Cadmium pollution of water body produces a disease of humans called

Description : Cadmium pollution of water body produces a disease of humans called

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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

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

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Last Answer : B. Respiratory problems

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

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Why do cell walls absorb water ?

Description : Why do cell walls absorb water ?

Last Answer : Plant cell walls absorb water. Because in the case of plants the cell walls are colloidal substances. And different types of colloidal substances exist in plants. Such as starch , gelatin , cellulose etc. These substances are able to absorb water due to their colloidal properties.

Why Water and Mineral Salt Are Important for Plant Growth ?

Description : Why Water and Mineral Salt Are Important for Plant Growth ?

Last Answer : Water and mineral salts are important for plant growth. This is because the solution of this water and mineral salt reaches the leaves through the stems and branches. The leaves use them in the process of ... parts of the body. And by eating this food, the plant survives and the plant grows.

How do plants absorb water through root hairs ?

Description : How do plants absorb water through root hairs ?

Last Answer : Answer : Plants absorb water through unicellular root hairs.

In which process of plant protoplasm and cell wall absorbs water ?

Description : In which process of plant protoplasm and cell wall absorbs water ?

Last Answer : The plant absorbs water in the process of protoplasm and cell wall adsorption.