Recent reports of acid rains industrial cities are due to the effect of atmospheric pollution by

(1) Excessive release of NO2 and SO2 by burning of fossil fuels.

(2) Excessive release of CO2 by burning of fuel like wood and charcoal, cutting of forests and increased  animal population.

(3) Excessive release of NH3  by industrial plants and coal gas.

(4) Excessive release of CO in atmosphere by incomplete combustion of cock, charcoal and other carbonaceous fuels in pancity of oxygen.

Subtopic:  Air Pollution - Acid Rain |
 82%
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Pollution is a change in physical, chemical or biological characters of our land and water that may be

(1) Desirable and harmful to human

(2) Desirable and useful to a human

(3) Undesirable and harmful to human

(4) undesirable and useful to a human

Subtopic:  Air Pollution - Greenhouse Effect |
 93%
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Which is the greatest air pollutant these days

(1) Factories

(2) Motor vehicles

(3) Domestic appliances

(4) animals

Subtopic:  Air Pollution - Smog |
 77%
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Removal of the soil by the action of wind and water is known as

(1) Erosion

(2) Fossilization

(3) Leaching

(4) Calcification

Subtopic:  Soil Pollution & Waste Management |
 91%
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Acid rain occurs due to the presence of : 

1. SO2 in the atmosphere

2. NH3  in the atmosphere

3. CO2  in the atmosphere

4. N2O  in the atmosphere

Subtopic:  Air Pollution - Acid Rain |
 92%
From NCERT
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Photochemical smog was first observed in -

(1) London

(2) Los Angeles

(3) Paris

(4) Tokyo

Subtopic:  Air Pollution - Smog |
 65%
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An increase in CO2 concentration in the atmosphere will result in : 

1. Adverse effects on natural vegetation.

2. Global warming.

3. Temperature decrease in a global atmosphere.

4. Genetic disorders in plants and animals.

Subtopic:  Air Pollution - Global Warming |
 92%
From NCERT
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Domestic waste will lead to -

(1) Biodegradable pollution

(2) Nondegradable pollution

(3) Thermal pollution of soil

(4) Air pollution

Subtopic:  Soil Pollution & Waste Management |
 87%
From NCERT
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The major source of BOD in the river Ganga is 

(1) Leaf litter

(2) Fishes

(3) Human waste

(4) Aquatic plants

Subtopic:  Water Pollution - Biological Oxygen Demand |
 89%
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If a lake is contaminated with DDT, its highest concentration would be found in

(1) Primary consumer

(2) Secondary consumer

(3) Tertiary consumer

(4) None of these

Subtopic:  Water Pollution - Water Pollution & Portable Water |
 87%
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