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question_answer1)
Which of the following is an abiotic component of the environment?
A)
Plants done
clear
B)
Animals done
clear
C)
Microorganisms done
clear
D)
Water done
clear
E)
None of these done
clear
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question_answer2)
Which one of the following statements is true?
Statement 1: \[S{{O}_{2}}\] is a pollutant. |
Statement 2: \[S{{O}_{2}}\] reacts with water in the atmosphere to form sulphuric acid. |
A)
Statement 1 done
clear
B)
Statement 2 done
clear
C)
Both statements are correct done
clear
D)
Both statements are incorrect done
clear
E)
None of these done
clear
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question_answer3)
Identify the process through which carbon is incorporated into life-forms.
A)
Respiration done
clear
B)
Combustion done
clear
C)
Photosynthesis done
clear
D)
All the above done
clear
E)
None of these done
clear
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question_answer4)
Which of the following represents the correct formula of ozone?
A)
\[Ozn\] done
clear
B)
\[{{O}_{2}}Zn\] done
clear
C)
\[{{O}_{3}}Zn\] done
clear
D)
\[{{O}_{3}}\] done
clear
E)
None of these done
clear
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question_answer5)
Which of the following damages ozone layer?
A)
Chlorine done
clear
B)
Fluorine done
clear
C)
Hydrogen done
clear
D)
CFCs done
clear
E)
None of these done
clear
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question_answer6)
Which of the following types of soil is very fertile and enriched with organic material?
A)
Chalky done
clear
B)
Loamy done
clear
C)
Silty done
clear
D)
Clayey done
clear
E)
None of these done
clear
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question_answer7)
Oxides of ________are released in atmosphere, when fossil fuel is burnt.
A)
Uranium done
clear
B)
Nitrogen done
clear
C)
Sulphur done
clear
D)
Both [b] and [c] done
clear
E)
None of these done
clear
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question_answer8)
The process of conversion of ammonia into nitrates is called:
A)
Ammonification done
clear
B)
Nitrification done
clear
C)
Photosynthesis done
clear
D)
Respiration done
clear
E)
None of these done
clear
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question_answer9)
Which of the following could be the after effect of soil erosion?
A)
Drought done
clear
B)
Flood done
clear
C)
Landslide done
clear
D)
All the above done
clear
E)
None of these done
clear
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question_answer10)
Which of the following gas is responsible for causing green-house effect?
A)
Carbon dioxide done
clear
B)
Methane done
clear
C)
Nitrous oxide done
clear
D)
All the above done
clear
E)
None of these done
clear
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question_answer11)
Which one among the following is not a layer of atmosphere?
A)
Mesosphere done
clear
B)
Stratosphere done
clear
C)
Lithosphere done
clear
D)
Troposphere done
clear
E)
None of these done
clear
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question_answer12)
Arrange the following components in decreasing order according to their percentage present in air.
A)
Nitrogen, Oxygen, Argon, Carbon dioxide. done
clear
B)
Oxygen, Argon, Carbon dioxide, Nitrogen. done
clear
C)
Nitrogen, Carbon dioxide, Oxygen, Argon. done
clear
D)
Nitrogen, Oxygen, Carbon dioxide, Argon. done
clear
E)
None of these done
clear
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question_answer13)
Zephyr refers to:
A)
A gale with great speed. done
clear
B)
A soft gentle breeze. done
clear
C)
A type of soil. done
clear
D)
Name of a pesticide. done
clear
E)
None of these done
clear
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question_answer14)
The zone of earth where the atmosphere, hydrosphere and lithosphere interact is:
A)
Microsphere done
clear
B)
Lithosphere done
clear
C)
Biosphere done
clear
D)
Stratosphere done
clear
E)
None of these done
clear
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question_answer15)
Few characteristics of a type of soil are given below. Find the type of the soil based on the given characteristics.
(i) Presence of iron oxides in the soil. |
(ii) Formed by the erosion of rocks in areas of high temperature. |
(iii) Soil appears red in colour. |
(iv) Found in western and eastern ghats. |
(v) Soil is not very fertile. |
A)
Alluvial soil done
clear
B)
Laterite soil done
clear
C)
Red soil done
clear
D)
Black soil done
clear
E)
None of these done
clear
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question_answer16)
Which one of the following processes does not lead to loss of oxygen from atmosphere?
A)
Respiration done
clear
B)
Surface weathering of exposed rocks. done
clear
C)
Break down of water by ultraviolet radiations into component molecules. done
clear
D)
Formation of carbonate shell materials by marine organisms. done
clear
E)
None of these done
clear
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question_answer17)
The vertical movement of air is:
A)
Wind current done
clear
B)
Wind done
clear
C)
Air cycle done
clear
D)
Smog done
clear
E)
None of these done
clear
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question_answer18)
Which one of the following is not a cause of ozone depletion?
A)
Oxides of nitrogen done
clear
B)
Oxides of sulphur dioxide done
clear
C)
CFCs done
clear
D)
All the above done
clear
E)
None of these done
clear
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question_answer19)
A triatomic molecule having three atoms of oxygen is:
A)
Elemental oxygen done
clear
B)
Ozone done
clear
C)
Tetra oxygen done
clear
D)
Water molecule done
clear
E)
None of these done
clear
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question_answer20)
Which of the following activities leads to increase carbon dioxide content in air?
A)
Burning of fossil fuels. done
clear
B)
Burning of wood and charcoal done
clear
C)
Deforestation done
clear
D)
All the above done
clear
E)
None of these done
clear
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question_answer21)
Which one of the following is not found in air?
A)
Carbon dioxide done
clear
B)
Argon done
clear
C)
Nitrogen done
clear
D)
Silver done
clear
E)
None of these done
clear
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question_answer22)
____ is present in the highest concentration in sea water.
A)
Sodium fluoride done
clear
B)
Magnesium sulphate done
clear
C)
Sodium chloride done
clear
D)
Calcium carbonate done
clear
E)
None of these done
clear
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question_answer23)
In which form carbon is not stored on earth?
A)
As organic molecule in living organisms. done
clear
B)
As carbon dioxide in the atmosphere. done
clear
C)
As water molecule done
clear
D)
. As organic matter in soil. done
clear
E)
None of these done
clear
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question_answer24)
One of the following factors does not lead to soil formation in nature:
A)
The sun done
clear
B)
Water done
clear
C)
Wind done
clear
D)
Polythene bags done
clear
E)
None of these done
clear
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question_answer25)
____ are known as producers of an ecosystem.
A)
Microorganisms done
clear
B)
Animals done
clear
C)
Green plants done
clear
D)
Clouds done
clear
E)
None of these done
clear
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question_answer26)
A non-renewable source of energy is:
A)
Solar energy done
clear
B)
Wind energy done
clear
C)
Tidal energy done
clear
D)
Natural gas done
clear
E)
None of these done
clear
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question_answer27)
Terrace farming helps the most in which of the following areas in soil conservation?
A)
Deserts done
clear
B)
Hilly regions done
clear
C)
Plains done
clear
D)
Wet areas done
clear
E)
None of these done
clear
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question_answer28)
Which of the following gets heat up faster by solar radiation?
A)
Water bodies done
clear
B)
Land done
clear
C)
Both [a] and [b] heats up at the same time. done
clear
D)
Either [a] or [b] done
clear
E)
None of these done
clear
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question_answer29)
Which one among the following is used as environment indicators or bio-indicators to check the level of pollution?
A)
Lichens done
clear
B)
Mosses done
clear
C)
Ferns done
clear
D)
All the above done
clear
E)
None of these done
clear
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question_answer30)
Biotic components of an ecosystem consists of:
A)
Consumers done
clear
B)
Producers done
clear
C)
Decomposers done
clear
D)
All the above done
clear
E)
None of these done
clear
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question_answer31)
By which of the following methods soil erosion can be prevented?
A)
Afforestation done
clear
B)
Terrace farming done
clear
C)
Intensive cropping done
clear
D)
All the above done
clear
E)
None of these done
clear
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question_answer32)
Decomposers include which of the following in a natural ecosystem?
A)
Algae only done
clear
B)
Green plants only done
clear
C)
Bacteria and fungi done
clear
D)
All the above done
clear
E)
None of these done
clear
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question_answer33)
What would happen, if all the oxygen present in the environment is converted to ozone?
A)
We will be protected more. done
clear
B)
It will become poisonous and kill living forms. done
clear
C)
Ozone is not stable, hence it will be toxic. done
clear
D)
It will help harmful sun radiations to reach earth and damage many life forms. done
clear
E)
None of these done
clear
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question_answer34)
Which of the following processes is not a part of water-cycle occuring in nature?
A)
Precipitation done
clear
B)
Transpiration done
clear
C)
Nitrogen fixation done
clear
D)
Evaporation done
clear
E)
None of these done
clear
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question_answer35)
The atmosphere of the earth is heated by radiations which are mainly:
A)
Radiated by the sun done
clear
B)
Re-radiated by land done
clear
C)
Re-radiated by water done
clear
D)
Re-radiated by land and water done
clear
E)
None of these done
clear
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question_answer36)
Carbon-cycle does not involve:
A)
Respiration done
clear
B)
Photosynthesis done
clear
C)
Transpiration done
clear
D)
Burning of fossil fuels done
clear
E)
None of these done
clear
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question_answer37)
Which one of the following is the most important function of santuaries?
A)
Entrap animals done
clear
B)
Conservation of animals done
clear
C)
Rearing of animals for obtaining wool done
clear
D)
All the above done
clear
E)
None of these done
clear
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question_answer38)
The nitrogen molecules present in air can be converted into nitrates and nitrites by:
A)
A biological process of nitrogen fixing bacteria present in soil. done
clear
B)
A biological process of carbon fixing factor present in soil. done
clear
C)
Any of the industries manufacturing nitrogenous compounds. done
clear
D)
The plants used as cereal crops in field. done
clear
E)
None of these done
clear
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question_answer39)
The term "water-pollution" can be defined in several ways. Which of the following statements does not give the correct definition?
A)
The addition of undesirable substances to water-bodies done
clear
B)
The removal of desirable substances from water-bodies done
clear
C)
A change in pressure of the water bodies done
clear
D)
A change in temperature of the water bodies done
clear
E)
None of these done
clear
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question_answer40)
The ores of ____ provide atomic energy.
A)
Copper done
clear
B)
Iron done
clear
C)
Uranium done
clear
D)
Both [a] and [b] done
clear
E)
None of these done
clear
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