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Question-1
________ is a dynamic and complex whole, interacting as an ecological unit.
(A)
Ecosystem
(B)
Ecology
(C)
Environment
(D)
Nature
Question-2
The green house effect has pushed up the global temperature. This phenomenon is called
(A)
Ozone depletion
(B)
Green house effect
(C)
Global warming ozone layer
(D)
Ozone layer
Question-3
What is the hottest layer in the atmosphere?
(A)
Stratosphere
(B)
Troposphere
(C)
Mesosphere
(D)
Thermosphere
Question-4
What is the harm from the depletion of Earth's ozone layer?
(A)
The average temperature of earth's surface will increase gradually
(B)
The oxygen content of the atmosphere will decrease
(C)
Increase amount of Ultra violet radiation will reach earth's surface
(D)
Sea levels will rise as the polar ice caps will gradually melt
Question-5
A natural phenomenon that becomes harmful due to pollution is
(A)
Global warming
(B)
Ecological balance
(C)
Green house effect
(D)
Desertification
Question-6
The atmosphere with the help of green house gases retain its temperature. This phenomenon is called
(A)
Ozone layer
(B)
Green house effect
(C)
Ozone depletion
(D)
Green house gases
Question-7
The concentration of which gas is highest in our environment.
(A)
Oxygen
(B)
Hydrogen
(C)
Nitrogen
(D)
Carbon dioxide
Question-8
The main cause for natural air pollution is
(A)
Vehicular emission
(B)
Volcanic eruption
(C)
Thermal power plants
(D)
Acid rain
Question-9
The most serious environmental effect posed by hazardous waster is
(A)
Air pollution
(B)
Contamination of Ground water
(C)
Increased use of land for land fills
(D)
Destruction of habitat
Question-10
The study of relationships between organisms and their environment is
(A)
Ecology
(B)
Zoology
(C)
Eco biology
(D)
Micro biology
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Std 10
Tamil Nadu (English Medium)
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