Chapter 14
Natural Resources
MCQs
Q 1.: Which of the following is a renewable source?
(A) Wood
(B) Wildlife
(C) Forest
(D) All of these
Option – D
Q 2.: Which one is inexhaustible source?
(A) Soil
(B) Fossil Fuels
(C) Solar radiations
(D) Minerals
Option – C
Q 3.: Soil is a component of
(A) Atmosphere
(B) Hydrosphere
(C) Lithosphere
(D) Stratosphere
Option – C
Q 4.: SPM consists of
(A) Soot and smoke
(B) Fly ash
(C) Dust
(D) All of these
Option – D
Q 5.: The source of acid rain is atmospheric
(A) Nitrogen oxides
(B) Sulphur oxides
(C) Both (a) and (b)
(D) None
Option – C
Q 6.: The temperature range of on the moon is
(A) -10ºC to 10ºC
(B) -190º C to 110ºC
(C) -90ºC to 10ºC
(D) -50ºC to 250ºC
Option – B
Q 7.: The gaseous component over the earth’s surface comprises
(A) Atmosphere
(B) Hydrosphere
(C) Lithosphere
(D) Ionosphere
Option – A
Q 8.: Rainfall patterns depend on
(A) The underground water table
(B) The number of water bodies in an area
(C) The density pattern of human population in an area
(D) The prevailing season in an area
Option – D
Q 9.: Which of the following is not a greenhouse gas ?
(A) Methane
(B) Carbon dioxide
(C) Carbon monoxide
(D) Nitrous oxide
Option – C
Q 10.: If there were no atmosphere around the earth, the temperature of the earth would
(A) Increase
(B) Go on decreasing
(C) Increase during day and decrease during night
(D) Be unaffected
Option – C
Q 11.: Among the given options, which one is not correct for the use of large amount of fertilisers and pesticides?
(A) They are ecofriendly
(B) They turn the fields barren after some time
(C) They adversely affect the useful component of the soil
(D) They destroy the soil fertility
Option – A
Q 12.: Total earth’s surface covered by water is
(A) 71%
(B) 60%
(C) 85%
(D) 50%
Option – A
Q 13.: Of the total freshwater available on the earth, what percentage is in frozen state?
(A) 90%
(B) 77%
(C) 22%
(D) 10%
Option – B
Q 14.: Wind moving with a speed of more than 120 km/h is called
(A) Breeze
(B) Storm
(C) Gale
(D) Hurricane
Option – D
Q 15.: A lake with an inflow domestic sewage rich in organic waste may result in
(A) Drying of the lake due to algal bloom
(B) An increased production of fish due to lot of nutrients
(C) Death of fish due to lack of oxygen
(D) Increased population of aquatic organisms
Option – C
Q 16.: Conservation is
(A) Proper use of natural resources
(B) Protection of natural resources
(C) Management of natural resources
(D) All of them
Option – D
Q 17.: Low visibility during cold weather is due to
(A) Formation of fog
(B) Unburnt carbon particles suspended in air
(C) Lack of adequate power supply
(D) None of these
Option – A
Q 18.: The most exploited non-renewable resource is
(A) Water
(B) Petroleum
(C) Electricity
(D) All of the above
Option – B
Q 19.: Hydrological cycle is under the control of
(A) Grasslands
(B) Forests
(C) Planktons
(D) Epiphytes
Option – B
Q 20.: Greenhouse effect due to the increasing concentration of
(A) CO2
(B) CO
(C) SO2
(D) O3
Option – A
Q 21.: The chief source of nitrogen for plant in soil is
(A) Nitrite
(B) Nitrate
(C) Ammonia
(D) Free nitrogen
Option – B
Q 22.: Soil is component of
(A) Atmosphere
(B) Mesosphere
(C) Lithosphere
(D) Stratosphere
Option – C
Q 23.: Soil erosion can be prevented by
(A) Heavy rain
(B) Deforestation
(C) Afforestation
(D) Overgrazing
Option – C
Q 24.: Conversion of soil nitrates into nitrogen is called
(A) Denitrification
(B) Nitrification
(C) Nitrogen fixation
(D) Ammonification
Option – A
Q 25.: Which one of the following is not a fossil fuel?
(A) Coal
(B) LPG
(C) Petroleum
(D) Uranium
Option – D
Q 26.: Oxygen is returned back to atmosphere by
(A) Respiration
(B) Photosynthesis
(C) Nitrification
(D) Denitrification
Option – B
Q 27.: Soil conservation is a process in which
(A) Soil is aerated
(B) Soil erosion is allowed
(C) Sterile soil is made fertile
(D) Soil is protected against loss
Option – D
Q 28.: Plants die in water logged soil because of
(A) Nutrient leaching
(B) Dilution of soil nutrients
(C) Stoppage of root respiration
(D) Dilution of cell sap
Option – C
Q 29.: CFCs cause
(A) Depletion of ozone layer
(B) Depletion of CO2
(C) Acid rain
(D) Carbon monoxide poisoning
Option – A
Q 30.: Which one of the following is a mismatched?
(A) Fossil fuel burning – release of CO2
(B) Nuclear power – radioactive waste
(C) Solar energy – greenhouse effect
(D) Biomass burning – release of CO2
Option – C
Q 31.: Which component of the soil makes it porous?
(A) Humus
(B) Water
(C) Minerals
(D) Living organisms
Option – A
Q 32.: Harmful ultraviolet rays of sun are absorbed by
(A) Carbon dioxide
(B) Ozone
(C) Helium
(D) Cloud
Option – B
Q 33.: Which gases cause global warming?
(A) Inert gases
(B) Rare gases
(C) Greenhouse gases
(D) Nobel gases
Option – C
Q 34.: Nitrites can be converted into nitrates by_________
(A) Nitrobactor bacteria
(B) Nitrosomonas bacteria
(C) Symbiotic bacteria
(D) Ammonifying bacteria
Option – A
Q 35.: __________ cause depletion of ozone layer
(A) Water vapour
(B) Greenhouse gases
(C) Inert gases
(D) Chlorofluorocarbons
Option – D
Q 36.: The main biological process through which oxygen is returned to the atmosphere is __________.
(A) Burning of fossil fuel
(B) Respiration
(C) Photosynthesis
(D) Rainfall
Option – C
Q 37.: The factors which do not lead to soil formation in nature is_________
(A) Polythene bags
(B) Sun
(C) Water
(D) Wind
Option – A
Q 38.: The form of water which is suitable for drinking is__________?
(A) Soft water
(B) Potable water
(C) Distilled water
(D) Demineralised water
Option – B
Q 39.: One of the following processes is not a step involved in the water-cycle operating in nature
(A) Evaporation
(B) Transpiration
(C) Precipitation
(D) Photosynthesis
Option – D
Q 40.: Which step is not involved in the carbon-cycle?
(A) Photosynthesis
(B) Transpiration
(C) Respiration
(D) Burning of fossil Fuels
Option – B