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English I
Economics
Computer Application
Physics
Chemistry
Biology
Mathematics
History & Civics
Geography
English II
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Question-1
Ozone layer of upper atmosphere is being destroyed by
(A)
Chlorofluorocarbon
(B)
Photochemical oxidants
(C)
Sulphur dioxide
(D)
Smog
Question-2
The final stable community in ecological succession is
(A)
Climax
(B)
Sere
(C)
Pioneers
(D)
Carnivores
Question-3
Ozone day is observed on
(A)
September 16
(B)
April 25
(C)
January 15
(D)
December 16
Question-4
Transfer of energy in different trophic levels of an ecosystem is called
(A)
Bioenergetics
(B)
Biosystem
(C)
Geobiocoenosis
(D)
Holocoenotic
Question-5
Which one of the following is not a functional unit of an ecosystem?
(A)
Productivity
(B)
Stratification
(C)
Energy flow
(D)
Decomposition
Question-6
In an aquatic ecosystem, the trophic level equivalent to cows in grasslands is
(A)
Nekton
(B)
Zooplankton
(C)
Phytoplankton
(D)
Benthos
Question-7
Biotic components of Ecosystem includes:
(A)
Light
(B)
Autotrophs
(C)
Water
(D)
Wind
Question-8
Decomposition of domestic wastes under natural processes is called
(A)
Industrial pollution
(B)
Thermal pollution
(C)
Biodegradable pollution
(D)
Nonbiodegradable pollution
Question-9
Acacia arabica is
(A)
Hydrophyte
(B)
Mesophyte
(C)
Xerophyte
(D)
All the above
Question-10
The most appropriate measure of a country's economic growth is its
(A)
Gross Domestic Product
(B)
Net Domestic Product
(C)
Net National Product
(D)
Per Capita Real Income
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Std 9
ICSE/ISC
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