NEET Foundation Biology Chapter 5 Natural Resources Multiple Choice Questions

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Chapter 5 Natural Resources Multiple Choice Question And Answers

Direction: Choose the correct option for each questions. There is only one correct response for each question.

Question 1. The ozone layer is contained within which layer of the atmosphere?

  1. Mesosphere
  2. Troposphere
  3. Stratosphere
  4. Ionosphere

Answer. 3. Stratosphere

Question 2. The rigid outer part of the earth which consists of the crust and upper mantle is called ________.

  1. Lithosphere
  2. Mesospheric mantle
  3. Asthenosphere
  4. Inner core

Answer. 1. Lithosphere

Question 3. Which gas, by volume, holds the highest percentage in the composition of dry air on earth?

  1. Oxygen
  2. Nitrogen
  3. Carbon dioxide
  4. Argon

Answer. 2. Nitrogen

Question 4. On the basis of their continued availability, how will you classify the resources?

  1. Renewable and non-renewable
  2. Metallic and non-metallic
  3. Potential and actual.
  4. None of the above

Answer. 1. Renewable and non-renewable

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Question 5. Which instrument measures the pressure of the atmosphere?

  1. Galvanometer
  2. Hygrometer
  3. Pyrometer
  4. Barometer

Answer. 4. Barometer

Question 6. Which gas is filled in weather observation balloons?

  1. Nitrogen
  2. Helium
  3. Argon
  4. Oxygen

Answer. 2. Helium

Question 7. What is the process of seeping water into ground known as?

  1. Infiltration
  2. Irrigation
  3. Aeration
  4. Sublimation

Answer. 1. Infiltration

Question 8. Identify which of the following is not a source of ground water.

  1. Rain water
  2. Aquifers
  3. Rivers
  4. Seawater

Answer. 4. Seawater

Question 9. Which term is used for the condensation of water vapour in the atmosphere that falls under gravity?

  1. Transpiration
  2. Evaporation
  3. Precipitation
  4. Desalination

Answer. 3. Precipitation

Question 10. Which of the given statements is not true for ozone?

  1. It is a pungent smelling blue gas.
  2. It can treat gangrene and is used as a disinfectant.
  3. A molecule of ozone has three oxygen atoms.
  4. Low level ozone is not harmful.

Answer. 4. Low level ozone is not harmful.

Question 11. Water and air together constitute what percentage of soil composition?

  1. Around 10%
  2. Around 25%
  3. Around 50%
  4. Around 70%

Answer. 3. Around 50%

Question 12. Which layer of the soil is the bedrock?

  1. Horizon O
  2. Horizon A
  3. Horizon C
  4. Horizon R

Answer. 4. Horizon R

Question 13. Which is the most determining factor for soil structure?

  1. Parent rock
  2. Humus
  3. Water content
  4. Location

Answer. 2. Humus

Question 14. Water pollution results in the spread of many harmful diseases. Identify which one is not due to water pollution?

  1. Fluorosis
  2. Arsenicosis
  3. Lead poisoning
  4. Cystic fibrosis

Answer. 4. Cystic fibrosis

Question 15. Which of the following rocks do not allow seepage of water?

  1. Permeable rocks
  2. Impermeable rocks
  3. Stratified rocks
  4. None of these

Answer. 2. Impermeable rocks

Question 16. In which category can fungi be kept?

  1. Consumer
  2. Producer
  3. Decomposer
  4. None of these

Answer. 3. Decomposer

Question 17. Which of the following is not a greenhouse gas?

  1. CO2
  2. Nitrous oxide
  3. Methane
  4. Oxygen

Answer. 4. Oxygen

Question 18. What term is given to the process when plants absorb nitrogen through their roots from the soil?

  1. Nitrification
  2. Assimilation
  3. Denitrification
  4. Fixation

Answer. 2. Assimilation

Question 19. Living substances that contain carbon are called _______.

  1. organic
  2. inorganic
  3. carbonic
  4. none of these

Answer. 1. organic

Question 20. Which of the given factors is responsible for eutrophication of lakes?

  1. Industrial smoke
  2. Automobile exhaust
  3. Enrichment of water by nutrients
  4. None of these

Answer. 3. Enrichment of water by nutrients

Question 21. Which of the following is the International Day for ‘The Prevention of Ozone Layer’?

  1. September 12
  2. September 16
  3. December 16
  4. December 21

Answer. 2. September 16

Question 22. Identify the step which is not a part of the carbon cycle.

  1. Transpiration
  2. Respiration
  3. Photosynthesis
  4. Burning of fossil fuels

Answer. 1. Transpiration

Question 23. Which of the given facts is true for CFCs?

  1. CFCs have natural sources.
  2. CFCs are soluble in water.
  3. CFCs contain only carbon, chlorine and fluorine.
  4. All the above

Answer. 3. CFCs contain only carbon, chlorine and fluorine.

Question 24. Acid rain has high levels of _________.

  1. Nitric and sulphuric acids.
  2. Nitric and phosphoric acids.
  3. Phosphoric and carbonic acids.
  4. Sulphuric and phosphoric acids.

Answer. 1. Nitric and sulphuric acids.

Question 25. Which layer of atmosphere is important for telecommunication on earth?

  1. Troposphere
  2. Ionosphere
  3. Mesosphere
  4. Thermosphere

Answer. 2. Ionosphere

Question 26. Identify which of the following is not a cause of soil erosion.

  1. Tilling
  2. Terrace farming
  3. Deforestation
  4. No embankments along the river banks.

Answer. 2. Terrace farming

Question 27. Which of the following is the chief source of minerals in soil?

  1. Plants
  2. Animals
  3. Parent rock
  4. bacteria

Answer. 3. Parent rock

Question 28. Which of the given sources of water cannot be included in freshwater sources?

  1. Glaciers
  2. Aquifers
  3. Sea
  4. Underground streams

Answer. 3. Sea

Question 29. Identify the soil formed by intense leaching due to heavy rains.

  1. Laterite soil
  2. Alluvial soil
  3. Black soil
  4. Mountain soil

Answer. 1. Laterite soil

Question 30. What are the chief sources of carbon on earth?

  1. Oceans
  2. Atmosphere
  3. Petroleum and its products.
  4. All of these

Answer. 4. All of these

Question 31. Why nitrogen is an important gas?

  1. It dilutes the activity of oxygen and thus, combustion of fuel takes place at a moderate rate.
  2. It is used in food preservation.
  3. Only (1)
  4. Both (1) and (2)

Answer. 4. Both (1) and (2)

Question 32. Read the sentences and choose the correct option.

1. Alluvial soil is formed by the deposition of silt and alluvium brought down by rivers.

2.Its main contents are organic and nitrogenous contents.

Select the correct option.

  1. Only statement 1 is correct.
  2. Only statement 2 is correct.
  3. Both are correct.
  4. Both are incorrect.

Answer. 1. Only statement 1 is correct.

Question 33. Which of the following is/are part/s of water cycle?

  1. Precipitation
  2. Condensation
  3. Evaporation
  4. All of the above

Answer. 4. All of the above

Question 34. Which of the following is involved in ­adding CO2 back to the atmosphere?

(1) Respiration

(2) Combustion

(3) Decay and decomposition of organic remains

(4) Photosynthesis

Select the correct option.

  1. (1), (2), (3)
  2. (1), (2), (4)
  3. (2), (3)
  4. (1), (2)

Answer. 1. (1), (2), (3)

Question 35. Which of these is/are air pollutants?

  1. Nitrogen oxides
  2. Carbon monoxide
  3. Sulphur dioxide
  4. All of these

Answer. 4. All of these

Question 36. Which of these nitrogen fixing bacteria play an important role in the nitrogen cycle?

  1. Rhizobium
  2. Azotobacter
  3. Anabaena
  4. All of these

Answer. 4. All of these

Question 37. Which of the given statements are true for renewable sources of energy?

(1) These are derived from natural processes.

(2) Most energy sources are fossil fuels.

(3) It is a form of clean energy.

Select the correct option.

  1. All are true.
  2. (1) and (3) are true.
  3. Only (2) is true.
  4. (2) and (3) are not true.

Answer. 2. (1) and (3) are true.

Question 38. Identify the wrong statement/s from the following.

  1. Increase of CO2 is due to increased afforestation.
  2. Increase in CO2 results in the increase of atmospheric temperature at the same rate.
  3. Increase in CO2 results in melting of glaciers.
  4. All the above

Answer. 4. All the above

Question 39. Identify how are water vapours formed.

  1. Transpiration from plants
  2. Heating of water bodies
  3. Only (1)
  4. Both (1) and (2)

Answer. 4. Both (1) and (2)

Question 40. Which of the following makes use of CFCs?

  1. Blowing agents
  2. Refrigerators
  3. Both (1) and (2)
  4. Only (2)

Answer. 3. Both (1) and (2)

Question 41. Acid rain is caused by an increase in the atmosphere concentration of

  1. Ozone and dust
  2. SO2 and NO2
  3. SO3 and CO
  4. CO and CO2

Answer. 2. SO2 and NO2

Question 42. Maximum deposition of DDT will occur in

  1. Phytoplankton
  2. Crab
  3. Eel
  4. Sea gull

Answer. 4. Sea gull

Question 43. A lake with an inflow of domestic sewage rich in organic waste may result in

  1. drying of the lake very soon due to algal bloom
  2. an increased production of fish due to lot of nutrient
  3. death of fish due to lack of oxygen
  4. increased population of aquatic food web organism

Answer. 3. death of fish due to lack of oxygen

Question 44. Which one of the following pair is mismatched?

  1. Fossil fuel burning – release of CO2
  2. Nuclear power – radioactive waste
  3. Solar energy – greenhouse effect
  4. Biomass burning – release of CO2

Answer. 3. Solar energy – greenhouse effect

Question 45. Greenhouse effect is the cumulative result of the influences of certain gases. Indentify the gas which is not involved in this influence.

  1. Methane
  2. Chloroflurocarbons
  3. Nitrogen
  4. Carbon dioxide

Answer. 3. Nitrogen

Question 46. Soil conservation is a process in which

  1. Soil is aerated
  2. Soil erosion is allowed
  3. Sterile soil is made fertile
  4. Soil is protected against loss

Answer. 4. Soil is protected against loss

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Question 47. Plants die in water-logged soil because of

  1. Nutrient leaching
  2. Dilution of soil nutrient
  3. Stoppage of root respiration
  4. Dilution of cell sap

Answer. 3. Stoppage of root respiratio

Question 48. If more trees are grown in the industrial towns

  1. There will be rains
  2. Inhabitants will have more shades
  3. Oxygen will be replenished
  4. They will provide more fuel and food

Answer. 3. Oxygen will be replenished

Question 49. Depletion of forest result in

  1. Less rainfall
  2. Soil erosion
  3. Loss of fertility
  4. All the above

Answer. 4. All the above

Question 50. Which one of the following is an example of both organic and inorganic resources?

  1. Metallic ferrous ores
  2. Microbes
  3. Soil
  4. Air

Answer. 3. Soil

Question 51. Life supporting part of earth’s surface is known as

  1. Lithosphere
  2. Stratosphere
  3. Biosphere
  4. Ecotone

Answer. 3. Biosphere

Question 52. Harmful UV rays of the Sun are absorbed by

  1. Carbon dioxide
  2. Ozone
  3. Oxygen
  4. Helium

Answer. 2. Ozone

Question 53. One of the important gases that is responsible for greenhouse effect is

  1. CO2
  2. O2
  3. N2
  4. CO

Answer. 1. CO2

Question 54. Air is a mixture of gases with the following gas in maximum percentage

  1. Oxygen
  2. Hydrogen
  3. Nitrogen
  4. Carbon dioxide

Answer. 3. Nitrogen

Question 55. Biosphere includes:

  1. Hydrosphere
  2. Lithosphere
  3. Atmosphere
  4. All of the above

Answer. 4. All of the above

Question 56. Fertility of the soil is reduced by

  1. Decaying organic matter
  2. Crop rotation
  3. Intensive agriculture
  4. None

Answer. 3. Intensive agriculture

Question 57. Deforestation causes:

  1. Soil erosion
  2. Pollution
  3. Both of above
  4. None of these

Answer. 3. Both of above

Question 58. The average amount of CO2 in atmosphere is

  1. 0.3%
  2. 0.003%
  3. 3.0%
  4. 0.03%

Answer. 4. 0.03%

Question 59. The average amount of N2 in atmosphere is

  1. 78%
  2. 0.3%
  3. 7.8%
  4. 0.03%

Answer. 1. 78%

Question 60. Which substance is responsible for depletion of ozone layer?

  1. CO2
  2. CH4
  3. CFCs
  4. CO

Answer. 3. CFCs

Question 61. Which organism cannot fix atmosphere nitrogen?

  1. Rhizobium
  2. Nostoc
  3. Azatobacter
  4. E. coli

Answer. 4. E. coli

Question 62. Which gas causes ‘greenhouse effect’ and leads to global warming?

  1. Carbon monoxide
  2. Carbon disulphide
  3. Carbon dioxide
  4. Oxygen

Answer. 3. Carbon dioxide

Question 63. ‘Freeing’ of N2 gas from nitrates present in soil and water is known as

  1. Nitrification
  2. Ammonification
  3. Denitrification
  4. Nitrogen fixation

Answer. 3. Denitrification

Question 64. Harmful UV radiations coming from sun to earth are absorbed by

  1. O2
  2. CO2
  3. N2
  4. Ozone

Answer. 4. Ozone

Question 65. What would happen, if all the oxygen present in the environment is covered with ozone?

  1. We will be protected more
  2. It will become posionous and kill living forms
  3. Ozone is not stable, hence it will be toxic
  4. It will help harmful sun radiations to reach earth and damage many life forms.

Answer. 3. Ozone is not stable, hence it will be toxic

Question 66. The two forms of oxygen found in the atmosphere are

  1. Water and ozone
  2. Water and oxygen
  3. Ozone and oxygen
  4. Water and carbon dioxide

Answer. 2. Water and oxygen

Question 67. The process of nitrogen fixation by bacteria does not take place in the presence of

  1. molecular form of hydrogen
  2. elemental form of oxygen
  3. water
  4. elemental form of nitrogen

Answer. 2. elemental form of oxygen

Question 68. One of the following processes is not a step involved in the water cycle operating in nature

  1. evaporation
  2. transpiration
  3. precipitation
  4. photosynthesis

Answer. 4. photosynthesis

Question 69. Which of the following is not a green house gas?

  1. Methane
  2. Carbon dioxide
  3. Carbon monoxide
  4. Ammonia

Answer. 4 Ammonia

Question 70. Which step is not involved in the carbon cycle?

  1. Photosynthesis
  2. Transpiration
  3. Respiration
  4. Burning of fossil fuels

Answer. 2. Transpiration

Question 71. The atmosphere of the earth is heated by radiations which are mainly

  1. radiated by the sun.
  2. re-radiated by land.
  3. re-radiated by water.
  4. re-radiated by land and water.

Answer. 4. re-radiated by land and water.

Question 72. If there were no atmosphere around the earth, then the temperature of earth will

  1. increase
  2. go on decreasing.
  3. increase during day and decrease during night.
  4. be unaffected.

Answer. 3. increase during day and decrease during night.

Question 73. What would happen if all the oxygen present in the environment is converted to ozone?

  1. We will be protected more.
  2. It will become poisonous and kill living forms.
  3. Ozone is not stable and hence, it will be toxic.
  4. It will help harmful sun radiations to reach earth and damage many life forms.

Answer. 2. It will become poisonous and kill living forms.

Question 74. Which one of the following factors does not lead to soil formation in nature?

  1. Sun
  2. Water
  3. Wind
  4. Polythene bags

Answer. 4. Polythene bags

Question 75. The two forms of oxygen found in the atmosphere are

  1. water and ozone.
  2. water and oxygen.
  3. ozone and oxygen.
  4. water and carbon dioxide.

Answer. 3. ozone and oxygen.

Question 76. The process of nitrogen fixation by bacteria does not take place in the presence of

  1. molecular form of hydrogen.
  2. elemental form of oxygen.
  3. water.
  4. elemental form of nitrogen.

Answer. 2. elemental form of oxygen.

Question 77. Rainfall patterns depend on

  1. the underground water table.
  2. the number of water bodies in an area.
  3. the density pattern of human population in an area.
  4. the prevailing season in an area.

Answer. 2. the number of water bodies in an area.

Question 78. Among the given options, which one is not correct for the use of large amount of fertilizers and pesticides?

  1. They are eco-friendly.
  2. They turn the fields barren after some time.
  3. They adversely affect the useful component from the soil.
  4. They destroy the soil fertility.

Answer. 1. They turn the fields barren after some time.

Question 79. The nitrogen molecules present in the air can be converted into nitrates and nitrites by

  1. a biological process of nitrogen fixing bacteria present in soil.
  2. a biological process of carbon fixing factor present in soil.
  3. any of the industries manufacturing nitrogenous compounds.
  4. the plants used as cereal crops in field.

Answer. 1. a biological process of carbon fixing factor present in soil.

Question 80. Which one of the following processes is not a step involved in the water-cycle operating in nature?

  1. Evaporation
  2. Transpiration
  3. Precipitation
  4. Photosynthesis

Answer. 4. Photosynthesis

Question 81. The term ‘water pollution’ can be defined in several ways. Which of the following statements does not give the correct definition?

  1. The addition of undesirable substances to water bodies.
  2. The removal of desirable substances from water bodies.
  3. A change in pressure of the water bodies.
  4. A change in temperature of the water bodies.

Answer. 3. A change in pressure of the water bodies.

Question 82. Which of the following is not a greenhouse gas?

  1. Methane
  2. Carbon dioxide
  3. Carbon monoxide
  4. Ammonia

Answer. 4. Ammonia

Question 83. Which of the following step is not involved in the carbon cycle?

  1. Photosynthesis
  2. Transpiration
  3. Respiration
  4. Burning of fossil fuels

Answer. 2. Transpiration

Question 84. ‘Ozone hole’ means

  1. a large sized hole in the ozone layer.
  2. thinning of the ozone layer.
  3. small holes scattered in the ozone layer.
  4. thickening of ozone in the ozone layer.

Answer. 2. thinning of the ozone layer.

Question 85. Ozone layer is getting depleted due to

  1. excessive use of automobiles.
  2. excessive formation of industrial units.
  3. excessive use of man-made compounds containing both fluorine and chlorine.
  4. excessive deforestation.

Answer. 3. excessive use of man-made compounds containing both fluorine and chlorine.

Question 86. Which of the following is a recently originated problem of environment?

  1. Ozone layer depletion
  2. Greenhouse effect
  3. Global warming
  4. All the above

Answer. 4. All the above

Question 87. When we breathe in air, nitrogen also goes inside along with oxygen. What is the fate of this nitrogen?

  1. It moves along with oxygen into the cells.
  2. It comes out with the CO2 during exhalation.
  3. It is absorbed only by the nasal cells
  4. Nitrogen concentration is already more in the cells so it is not at all absorbed.

Answer. 2. It comes out with the CO2 during exhalation.

Question 88. Top soil contains which of the following?

  1. Humus and living organisms only.
  2. Humus and soil particles only.
  3. Humus, living organisms and plants.
  4. Humus, living organisms and soil particles.

Answer. 4. Humus, living organisms and soil particles.

Question 89. Choose the correct sequence fromthe following.

  1. CO2 in atmosphere → Decomposers → Organic carbon in animals → Organic carbon in plants.
  2. CO2 in atmosphere → Organic carbon in plants → Organic carbon in animals → Inorganic carbon in soil.
  3. Inorganic carbonates in water → Organic carbon in plants → Organic carbon in animals → Scavengers.
  4. Organic carbon in animals → Decomposers → CO2 in atmosphere → Organic carbon in plants.

Answer. 2. CO2 in atmosphere → Organic carbon in plants → Organic carbon in animals → Inorganic carbon in soil.

Question 90. The major source of mineral in soil is the

  1. parent rock from which soil is formed.
  2. plants
  3. animals
  4. bacteria

Answer. 1. parent rock from which soil is formed.

Question 91. The total earth’s surface covered by water is

  1. 75%
  2. 60%
  3. 85%
  4. 50%

Answer. 1. 75%

Question 92. The biotic component of biosphere is not constituted by

  1. producers
  2. consumers
  3. decomposer
  4. air

Answer. 4. air

Question 93. An increase in carbon dioxide content in the atmosphere would not cause

  1. more heat to be retained by the environment.
  2. increase in photosynthesis in plants.
  3. global warming.
  4. abundance of desert plants.

Answer. 4. abundance of desert plants.

Question 94. Oxygen is returned to the atmosphere mainly by

  1. burning of fossil fuel.
  2. respiration
  3. photosynthesis
  4. fungi

Answer. 3. photosynthesis

Question 95. Low visibility during cold weather is due to

  1. formation of fossil fuel.
  2. unburnt carbon particles or hydrocarbons suspended in air.
  3. lack of adequate power supply.
  4. none of these

Answer. 2. unburnt carbon particles or hydrocarbons suspended in air.

Question 96. Growth of lichens on barren rocks is followed by the growth of

  1. moss
  2. ferns
  3. gymnosperms
  4. algae

Answer. 1. moss

Question 97. Marked temperature changes in aquatic environment can affect

  1. breeding of animals.
  2. more growth of aquatic plants.
  3. process of digestion in animals.
  4. availability of nutrients.

Answer. 1. breeding of animals.

Question 98. Soil erosion can be prevented by

  1. raising forests.
  2. deforestation.
  3. excessive use of fertilizer.
  4. overgrazing by animals.

Answer. 1. raising forests.

Question 99. What happens when rainfall on soil without vegetational cover?

  1. Rain water percolates in soil efficiently.
  2. Rain water causes loss of surface soil.
  3. Rain water leads to fertility of the soil.
  4. Rain water does not cause any change in soil.

Answer. 2. Rain water causes loss of surface soil.

Question 100. Oxygen is harmful for

  1. ferns
  2. nitrogen fixing bacteria
  3. chara
  4. mango tree

Answer. 2. nitrogen fixing bacteria

Question 101. The life supporting zone of the earth is

  1. lithosphere
  2. hydrosphere
  3. atmosphere
  4. biosphere

Answer. 4. biosphere

Question 102. Life cannot sustain on Mars and Venus because the major component in atmosphere is

  1. oxygen
  2. carbon dioxide
  3. nitrogen
  4. ozone

Answer. 2. carbon dioxide

Question 103. Atmosphere maintains the temperature of earth because

  1. it contains water vapour.
  2. it holds air, which is a bad conductor of heat.
  3. it reflects the heat rays.
  4. it absorbs the heat rays.

Answer. 2. it holds air, which is a bad conductor of heat.

Question 104. Molecules of proteins contain

  1. carbon
  2. nitrogen
  3. oxygen
  4. all of these

Answer. 4. all of these

Question 105. Which one of the following is an example of non-renewable resources?

  1. Wind
  2. Water
  3. Vegetation
  4. Coal and minerals

Answer. 4. Coal and minerals

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