EST CHP 2 saif evs.ppt

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Environmental studies By saif

Transcript of EST CHP 2 saif evs.ppt

Page 1: EST CHP 2 saif evs.ppt

Environmental studies

By saif

Page 2: EST CHP 2 saif evs.ppt

Which of the following is an example of non renewable resources?

wind vegetation

Coal and minerals

water

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Which of the following is renewable resource?

wind water

Flora and fauna

All of these

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Which gas in stratosphere does provide protection to our life?

Argon Nitrogen

Oxygen Ozone

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The Life spporting gases such as O2,co2 and n2 are chiefly concentrated in the?

troposphere

Nitrogen

homosphere

stratosphere

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Floods can be prevented by ?

afforestation

Removing the top soil

Cutting the forest

Tilling the land

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Biogas generation is mainly based on principle of?

Anaerobic degradation

Aerobic decomposition

putrefaction

None of these

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Which one of the following is not a fossil fuel?

petroleum coil

Natural gas uranium

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The depth of the last individual of a species is called…?

extinction endanger

(i)Neither(ii)Nor

diversity

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Atomic energy is obtained by using ores?

copper uranium

lead Crude oil

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… is the major raw material for biogas?

Tree leaves grass

Cow dung Waste from kitchen

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In the atmosphere , the layer above the troposphere is…..?

exosphere mesosphere

stratosphere

thermosphere

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Both power and manure are provided by…..?

Hydroelectric plants

Gobar gas plant

Nuclear power plant

Thermal plant

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Which of the following is not considered to be natural resource?

soil river

scenery climate

All of the above are example of natural resource

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Total earth’s surface covered by water is….?

75% 80%

60% 65%

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Biotic component of biosphere is not constituted by….?

producer decomposer

consumer air

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An increase in carbon dioxide content In the atmosphere would not cause….?More heat to retained by environment

Increase in photosynthesis in plant

Global warming Abundance of desert plants

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Oxygen is returned to atmosphere mainly by….?

respiration photosynthesis

fungi Burning of fuel

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Among the given options, which one is not correct for use of large amount of fertilizers and pesticides….?They are eco-friendly

They turn the fields barre nafter some time

They adversely affect the useful component from soil

They destroy the soil fertility

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Which rays are suppored by ozone layer in stratosphere….?

UV rays Infrared

X-rays Gamma rays

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Atmpsphere not uniformly heated by the sun does not cause….?

Air flows Variations in climate

rainfall tides

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Which is not true….?

Lithosphere includes the crust and the uppermost mantle

Lithosphere is underlain by the asthenosphere

Lithosphere provides timber

Lithosphere is broken into tectonic plates

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Which is false about biosphere….?

It is the global sum of all eco system

It can also be called the zone of life on earth

It does not contain microbes

It has evolved at least some 3.5 billion years ago

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Right AnswerHow can you so lucky

Page 25: EST CHP 2 saif evs.ppt

Wrong AnswerBetter luck next time