9th Class Science Natural resources Question Bank

done Natural Resources Total Questions - 50

• question_answer1)
  Which of the following steps are used to treat industrial wastes and reduce pollution?
  A)
  Only (i) and (iii)   done clear
  B)
  Only (i) and (ii) done clear
  C)
  Only (ii) and (iii) done clear
  D)
         (i), (ii) and (iii) done clear
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• question_answer2)
  Which of the following would happen in the absence of greenhouse effect in the atmosphere?
  A)
  Pollution will increase. done clear
  B)
  The earths surface temperature will increase.   done clear
  C)
  The earths surface temperature remains the same. done clear
  D)
  The depleted ozone layer will decrease the earths temperature. done clear
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• question_answer3)
  The diagram given below shows a part of the nitrogen cycle. Which of the labelled arrows indicates nitrogen fixation and denitrification?

  Nitrogen fixation	Denitrification
  P	Q

  A)

  Nitrogen fixation	Denitrification
  R	S

  done clear
  B)
  done clear
  C)

  Nitrogen fixation	Denitrification
  Q	P

    done clear
  D)

  Nitrogen fixation	Denitrification
  R	Q

  done clear
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• question_answer4)
  What is /are the likely consequences of deforestation?
  A)
  Carbon dioxide in the air increases. done clear
  B)
  Destruction of habitats takes place. done clear
  C)
  Mineral salts in the soil are washed away. done clear
  D)
  All of the above   done clear
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• question_answer5)
  What kind of pollution is being caused if a factory releases waste products into a nearby stream?
  A)
  Air                                done clear
  B)
  Noise done clear
  C)
  Water                              done clear
  D)
  Soil done clear
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• question_answer6)
  Identify the given biogeo chemical cycle.
  A)
  Mineral cycle      done clear
  B)
  Nitrogen cycle done clear
  C)
  Water cycle                    done clear
  D)
  Oxygen cycle   done clear
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• question_answer7)
  Which of these statements are true about air?
  A)
  (i) and (ii)                         done clear
  B)
  (ii) and (iii) done clear
  C)
  (ii) and (iii)         done clear
  D)
  (i), (ii) and (iii) done clear
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• question_answer8)
  What causes movement in air?
  A)
  Difference in temperature done clear
  B)
  Difference in pressure done clear
  C)
  Difference in volume done clear
  D)
  Both [a] and [b]   done clear
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• question_answer9)
  Which of the following natural processes play(s) a role in the nitrogen cycle?
  A)
  Lightning             done clear
  B)
  Flood done clear
  C)
  Storm                done clear
  D)
         All of these done clear
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• question_answer10)
  The water cycle in nature involves which of the following processes sequentially?
  A)
  Evaporation, precipitation and condensation. done clear
  B)
  Precipitation, condensation and evaporation. done clear
  C)
  Evaporation, condensation and precipitation.   done clear
  D)
  Condensation, evaporation and precipitation. done clear
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• question_answer11)
  What is the role of the bacteria in Root nodules of legumes
  A)
  To convert oxides of nitrogen into soil nitrates. done clear
  B)
  To convert atmospheric nitrogen gas into soil nitrates.   done clear
  C)
  To convert soil nitrates into gaseous nitrogen. done clear
  D)
  To convert plant proteins into ammonia. done clear
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• question_answer12)
  Which of these statements is/are true about the given sample of air?
  A)
  Dissolved air from pond water done clear
  B)
  Fresh air from a field done clear
  C)
  Exhaled air   done clear
  D)
  Polluted air near a factory done clear
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• question_answer13)
  How does photosynthesis help to maintain the percentage of oxygen and carbon dioxide in the atmosphere?
  A)
  By giving off carbon dioxide and absorbing oxygen. done clear
  B)
  By giving off oxygen and absorbing carbon dioxide.   done clear
  C)
  By releasing oxygen and carbon dioxide. done clear
  D)
  By absorbing oxygen and carbon dioxide. done clear
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• question_answer14)
  Identify T in the given water cycle.
  A)
  Melting                          done clear
  B)
  Condensation   done clear
  C)
  Evaporation                   done clear
  D)
  Precipitation done clear
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• question_answer15)
  Which of these methods is/are used to control water pollution?
  A)
  Only (i) and (ii)   done clear
  B)
  Only (ii) and (iii) done clear
  C)
  Only (i), (ii), (iii) done clear
  D)
  (i), (ii) and (iii)   done clear
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• question_answer16)
  Signs of eutrophication of water bodies include.
  A)
  reduced oxygen demand done clear
  B)
  rapid decomposition of organic matter. done clear
  C)
  algal bloom.   done clear
  D)
  fluorosis. done clear
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• question_answer17)
  Which of the following is renewable natural resource?
  A)
  Sunlight                           done clear
  B)
  Coal done clear
  C)
  Soil                               done clear
  D)
  Petroleum done clear
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• question_answer18)
  Which of the following are the ways of conserving and preserving the earths natural resources?
  A)
  Recycling wastes done clear
  B)
  Using alternative energy sources done clear
  C)
  Reducing the wastage of non-renewable natural resources done clear
  D)
  All of these   done clear
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• question_answer19)
  Which of the following natural disasters affect habitat in the environment?
  A)
  Droughts done clear
  B)
  Floods done clear
  C)
  The thinning of the ozone layer done clear
  D)
  All of these   done clear
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• question_answer20)
  Which of the following are negative effects on the environment from the excessive use of fertilisers in a farm situated near a lake?
  A)
  Decreased oxygen content in the water done clear
  B)
  Decreased light penetration in the water done clear
  C)
  Decreased population of aquatic organisms done clear
  D)
  All of these   done clear
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• question_answer21)
  Identify P in the given carbon cycle.
  A)
  Carbon compounds in animals done clear
  B)
  Carbon compounds in plants done clear
  C)
  Carbon dioxide in the air   done clear
  D)
  Coal and oil done clear
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• question_answer22)
  Identify the labelled parts P and R in the given cycle:
  A)

  P	R
  Photosynthesis	Nitrogen

  done clear
  B)

  P	R
  Respiration	Combustion

  done clear
  C)

  P	R
  Excretion	Oxygen

  done clear
  D)

  P	R
  Photosynthesis	Carbon dioxide

  done clear
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• question_answer23)
  Which of the following cause greenhouse effect?
  A)
  Only (i) and (ii)     done clear
  B)
  Only (i) and (iii) done clear
  C)
  Only (ii) and (iii) done clear
  D)
  (i), (ii) and (iii) done clear
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• question_answer24)
  Which of the following processes involves the escaping of nitrogen into air from decaying matter?
  A)
  Nitrification done clear
  B)
  Denitrification   done clear
  C)
  Nitrogen fixation done clear
  D)
  Nitrogen assimilation done clear
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• question_answer25)
  Which of the following are the adverse effects of deforestation?
  A)
  Reduced rainfall done clear
  B)
  Soil erosion done clear
  C)
  Destruction of habitat done clear
  D)
  All of these   done clear
  View Solution play_arrow

• question_answer26)
  Which of the following functions is associated with nostoc?
  A)
  Photosynthesis done clear
  B)
         Transpiration done clear
  C)
  Nitrogen fixation   done clear
  D)
  Carbon fixation done clear
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• question_answer27)
  Which of the following processes represents P, Q and R?
  A)
  P-Respiration, Q-Photosynthesis, R-Combustion. done clear
  B)
  P-Respiration, Q-Combustion, R-Photosynthesis.   done clear
  C)
  P-Combustion, Q-Decay, R-Respiration. done clear
  D)
  P-Decay, Q-Respiration, R-Photosynthesis. done clear
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• question_answer28)
  Which of the following chemicals cause the thinning of layer P?
  A)
  Carbon monoxide done clear
  B)
         Sulphur dioxide done clear
  C)
  Chlorofluorocarbons        done clear
  D)
  Both [a] and [c] done clear
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• question_answer29)
  The diagram shows the phenomenon of a natural disaster. Which of the following is an effect of the disaster?
  A)
  Air pollution       done clear
  B)
         Greenhouse effect   done clear
  C)
  Water pollution   done clear
  D)
  Sound pollution done clear
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• question_answer30)
  Which of the following processes labelled with arrows are brought about by bacteria?
  A)
  P and Q                        done clear
  B)
  Q and R done clear
  C)
  R and S                           done clear
  D)
  S and P done clear
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• question_answer31)
  Which of the following is/are caused due to deforestation?
  A)
  Soil erosion done clear
  B)
  Depletion of water in the catchment areas done clear
  C)
  Global warming done clear
  D)
  All of these   done clear
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• question_answer32)
  Which of the following statements is true about the process shown below?
  A)
  It is caused by the decay of organic substances. done clear
  B)
  It is an important process in the nitrogen cycle. done clear
  C)
  It is carried out by green plants and certain bacteria. done clear
  D)
  It is an essential process in living organisms to provide energy and in maintaining the balance between oxygen and carbon dioxide in the atmosphere.   done clear
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• question_answer33)
  Which of the following processes represents X, Y and Z in the given cycle?
  A)

  X	Y	Z
  Respiration	Photosynthesis	Decomposition

    done clear
  B)

  X	Y	Z
  Photosynthesis	Respiration	Decomposition

  done clear
  C)

  X	Y	Z
  Decomposition	Photosynthesis	Respiration

  done clear
  D)

  X	Y	Z
  Decomposition	Respiration	Photosynthesis

  done clear
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• question_answer34)
  Which of the following activities increase the concentration of carbon dioxide in the atmosphere?
  A)
  Deforestation   done clear
  B)
  Combustion of fuel done clear
  C)
  Over hunting done clear
  D)
  Both [a] and [b] done clear
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• question_answer35)
  Which of the following processes represents X?
  A)
  Respiration                     done clear
  B)
  Transpiration done clear
  C)
  Combustion                   done clear
  D)
  Evaporation   done clear
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• question_answer36)
  Which of the following will not cause an environmental pollution?
  A)
  Noise from vehicles done clear
  B)
  The Using of chemical fertilisers done clear
  C)
  Improper disposal of sewage done clear
  D)
  The Using of a CFC free refrigerator   done clear
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• question_answer37)
  Which of the following gases cause acid rain?
  A)
  Carbon monoxide and carbon dioxide. done clear
  B)
  Sulphur dioxide and oxides of nitrogen.   done clear
  C)
  Oxides of nitrogen and carbon dioxide. done clear
  D)
  None of these. done clear
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• question_answer38)
  Which of the following are essential for the maintenance of balance in the ecosystem?
  A)
  Water cycle        done clear
  B)
         Carbon cycle done clear
  C)
  Nitrogen cycle     done clear
  D)
  All of these   done clear
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• question_answer39)
  Which of the following processes provides most of the oxygen found in the earths atmosphere?
  A)
  Photosynthesis   done clear
  B)
         Aerobic respiration done clear
  C)
  Excretion                       done clear
  D)
  Fermentation done clear
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• question_answer40)
  Which of the following are caused due to the unplanned clearing of land?
  A)
  Only (i), (ii) and (iii) done clear
  B)
         Only (i), (ii) and (iv) done clear
  C)
  Only (i), (iii) and (iv) done clear
  D)
         (i), (ii), (iii) and (iv)   done clear
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• question_answer41)
  The figure given below shows part of the carbon cycle. K, L and M are processes that take place in the carbon cycle. Which of the following combinations represents K, L and M correctly?
  A)

  K	L	M
  Combustion	Respiration	Photosynthesis

  done clear
  B)

  K	L	M
  Respiration	Decomposition	Photosynthesis

  done clear
  C)

  K	L	M
  Decomposition	Respiration	Decomposition

  done clear
  D)

  K	L	M
  Combustion	Decomposition	Respiration

    done clear
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• question_answer42)
  Which of the human activity has added the largest amounts of carbon to the atmosphere?
  A)
  Burning fossil fuels   done clear
  B)
  Mining fossil fuels done clear
  C)
  Increasing soil erosion done clear
  D)
  Increasing food consumption done clear
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• question_answer43)
  Which of the following materials of biological origin are commonly used to maintain and improve soil fertility?
  A)
  Green manure    done clear
  B)
  Biofertilisers done clear
  C)
  Bioinsecticides    done clear
  D)
  Both [a] and [b]   done clear
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• question_answer44)
  Which of the following plays a major role in replacing oxygen in the atmosphere?
  A)
  Green plants   done clear
  B)
  The weathering of rocks done clear
  C)
  Fossil-fuel combustion done clear
  D)
  All of the above done clear
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• question_answer45)
  Water is recycled in nature through the water cycle. Which of the following processes are involved in the water cycle the most?
  A)
  (i) and (ii)             done clear
  B)
  (i) and (iii) done clear
  C)
  (ii) and (iii)         done clear
  D)
  (i), (ii) and (iii) done clear
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• question_answer46)
  Which of the following gases is regarded as an atmospheric pollutant?
  A)
  \[{{O}_{2}}\]                done clear
  B)
         \[{{O}_{3}}\] done clear
  C)
  \[S{{O}_{2}}\]                done clear
  D)
  \[{{N}_{2}}\] done clear
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• question_answer47)
  How do animals get their nitrogen?
  A)
  By absorbing nitrogen gas through the skin. done clear
  B)
  By eating carbohydrates like sugars and starch. done clear
  C)
  From nitrates in their drinking water. done clear
  D)
  By eating plants and other animals.   done clear
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• question_answer48)
  Which of the following gases is/are produced by decomposers during the decaying process?
  A)
  Only carbon dioxide gas done clear
  B)
  Only carbon dioxide and nitrogen gases   done clear
  C)
  Only oxygen gas done clear
  D)
  Only carbon dioxide and oxygen gases done clear
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• question_answer49)
  Which of the following reduce(s) air pollution?
  A)
  Only (i)              done clear
  B)
         (ii) and (iii) done clear
  C)
  (i) and (iii)          done clear
  D)
  (i), (ii) and (iii)   done clear
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• question_answer50)
  Which of the following is the largest reservoir of carbon?
  A)
  Soil                               done clear
  B)
  Atmosphere done clear
  C)
  Ocean                 done clear
  D)
  Sedimentary rocks done clear
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