Banking Chemistry Environmental Chemistry / पर्यावरणीय रसायन Question Bank

done Environmental Pollution Total Questions - 42

• question_answer1)
  Dinitrogen and dioxygen are main constituents of air but these do not react with each other to form oxides of nitrogen because _______.
  A)
   the reaction is endothermic and requires very high temperature. done clear
  B)
   the reaction can be initiated only in presence of a catalyst. done clear
  C)
   oxides of nitrogen are unstable. done clear
  D)
   \[{{N}_{2}}\] and \[{{O}_{2}}\] are unreactive. done clear
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• question_answer2)
  The pollutants which came directly in the air from sources are called primary pollutants. Primary pollutants are sometimes converted into secondary pollutants. Which of the following belongs to secondary air pollutants?
  A)
   CO                  done clear
  B)
   Hydrocarbon done clear
  C)
   Peroxyacetyl nitrate         done clear
  D)
   NO done clear
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• question_answer3)
  Which of the following is not a consequence of greenhouse effect?
  A)
   Climatic conditions will be changed done clear
  B)
   Plants in warmer climates with adequate rainfall would grow faster done clear
  C)
   The incidence of infectious diseases is likely to increase done clear
  D)
   Malaria will be controlled as the mosquitoes will not survive.   done clear
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• question_answer4)
  Which of the following gases is not a greenhouse gas?
  A)
   CO                   done clear
  B)
   \[{{O}_{3}}\] done clear
  C)
   \[C{{H}_{4}}\]                 done clear
  D)
          \[{{H}_{2}}O\] vapour done clear
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• question_answer5)
  The substance having the largest concentration in acid rain?
  A)
   \[{{H}_{2}}C{{O}_{3}}\]                    done clear
  B)
   \[HN{{O}_{3}}\] done clear
  C)
   \[HCL\]               done clear
  D)
          \[{{H}_{2}}S{{O}_{4}}\]   done clear
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• question_answer6)
  The non-viable particulate is among the following is
  A)
   Dust                  done clear
  B)
   Bacteria done clear
  C)
   Moulds              done clear
  D)
          Fungi done clear
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• question_answer7)
  Which of the following statements is not true about classical smog?
  A)
   Its main components are produced by the action of sunlight on emissions of automobiles and factories.   done clear
  B)
   Produced in cold and humid climate. done clear
  C)
   It contains compounds of reducing nature. done clear
  D)
   It contains smoke fog and sulphur dioxide done clear
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• question_answer8)
  Which of the following statements about photochemical smog is wrong?
  A)
   It has high concentration of oxidising agents done clear
  B)
   It has low concentration of oxidising agent   done clear
  C)
   It can be controlled by controlling the release of\[N{{O}_{2}}\], hydrocarbons ozone, etc. done clear
  D)
   Plantation of some plants like pinus helps in controlling photochemical smog. done clear
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• question_answer9)
  Which of the following statements is wrong?
  A)
   Ozone is not responsible for green-house effect.   done clear
  B)
   Ozone can oxidise sulphur dioxide present in the atmosphere to sulphur trioxide. done clear
  C)
   Ozone hole is thinning of ozone layer present in stratosphere. done clear
  D)
   Ozone is produced in upper stratosphere by the action of UV rays on oxygen. done clear
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• question_answer10)
  Which of the following statements is correct?
  A)
   Ozone hole is a hole formed in stratosphere from which ozone oozes out. done clear
  B)
   Ozone hole is a hole formed in the troposphere from which ozone oozes out. done clear
  C)
   Ozone hole is thinning of ozone layer of stratosphere at some places.   done clear
  D)
   Ozone hole means vanishing of ozone layer around the earth completely. done clear
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• question_answer11)
  Biochemical Oxygen Demand, (BOD) is a measure of organic material present in water. BOD value less than 5 ppm indicates a water sample to be ________.
  A)
   rich in dissolved oxygen   done clear
  B)
   poor in dissolved oxygen done clear
  C)
   highly polluted done clear
  D)
   not suitable for aquatic life done clear
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• question_answer12)
  Photochemical smog occurs in warm, dry and sunny climate. One of the following is not amongst the components of photochemical smog, identify it.
  A)
  \[N{{O}_{2}}\] done clear
  B)
   \[{{O}_{3}}\] done clear
  C)
   \[S{{O}_{2}}\]   done clear
  D)
   Unsaturated hydrocarbon done clear
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• question_answer13)
  Phosphate pollution is caused by
  A)
   sewage and agricultural fertilizers   done clear
  B)
   weathering of phosphate rocks only done clear
  C)
   agriculutral fertilizers only done clear
  D)
   phosphate rocks and sewage done clear
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• question_answer14)
  The type of pollution caused by spraying of DDT
  A)
   Air and soil                   done clear
  B)
   Air and water done clear
  C)
   Air                  done clear
  D)
          Air, water and soil   done clear
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• question_answer15)
  Which among the following statements is false?
  A)
   Oil slick in sea water increases D.O. value.   done clear
  B)
   The main reason for river water pollution is industrial and domestic sewage discharge. done clear
  C)
   Surface water contains a lot of organic matter mineral nutrients and radioactive materials. done clear
  D)
   Oil spill in sea water causes heavy damage to fishery. done clear
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• question_answer16)
  Sewage containing organic waste should not be disposed in water bodies because it causes major water pollution. Fishes in such a polluted water die because of
  A)
   large number of mosquitoes done clear
  B)
   increase in the amount of dissolved oxygen done clear
  C)
   decrease in the amount of dissolved oxygen in water   done clear
  D)
   clogging of gills by mud done clear
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• question_answer17)
  Which of the following practices will not come under green chemistry?
  A)
   If possible, making use of soap made of vegetable oils instead of using synthetic detergents. done clear
  B)
   Using \[{{H}_{2}}{{O}_{2}}\]for bleaching purpose instead of using chlorine based bleaching agents. done clear
  C)
   Using bicycle for travelling small distances instead of using petrol/ diesel based vehicles. done clear
  D)
   Using plastic cans for neatly storing substances.   done clear
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• question_answer18)
  Identify the wrong statement in the following:
  A)
   Chlorofluorocarbons are responsible for ozone layer depletion. done clear
  B)
   Greenhouse effect is responsible for global warming. done clear
  C)
   Acid rain is mostly because of oxides of nitrogen and sulphur. done clear
  D)
   Ozone layer does not permit infrared radiation from the sun to reach the earth.   done clear
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• question_answer19)
  Water is often treated with chlorine to
  A)
   remove hardness done clear
  B)
   increase oxygen content done clear
  C)
   kill germs   done clear
  D)
   remove suspended particles done clear
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• question_answer20)
  The greenhouse effect is because of the
  A)
   presence of gases, which in general are strong infrared absorbers, in the atmosphere   done clear
  B)
   presence of \[C{{O}_{2}}\]only in the atmosphere done clear
  C)
   pressure of \[{{O}_{3}}\] and \[C{{H}_{4}}\] in the atmosphere done clear
  D)
   \[{{N}_{2}}O\] and chlorofluorohydrocarbons in the atmosphere done clear
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• question_answer21)
  Which of the following is/are the hazardous pollutant(s) present in automobile exhaust gases? (i) \[{{N}_{2}}\],                       (ii) CO (iii) \[C{{H}_{4}}\]                    (iv) Oxides of nitrogen
  A)
   (ii) and (iii)                    done clear
  B)
   (i) and (ii) done clear
  C)
   (ii) and (iv)             done clear
  D)
          (i) and (iii) done clear
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• question_answer22)
  Green chemistry means such reasons which
  A)
               produce colour during reactions done clear
  B)
   reduce the use and production of hazardous chemicals   done clear
  C)
               are related to the depletion of ozone layer done clear
  D)
   study the reactions in plants done clear
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• question_answer23)
  Which one of the following statement is not true?
  A)
   pH of drinking water should be between 5.5-9.5 done clear
  B)
   Concentration of DO below 6 ppm is good for the growth of fish.   done clear
  C)
   Clean water would have a BOD value of less than 5ppm. done clear
  D)
   Oxides of sulphur, nitrogen and carbon are the most widespread air pollutant. done clear
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• question_answer24)
  Frequent occurrence of water blooms in a lake indicates
  A)
   nutrient deficiency done clear
  B)
   oxygen deficiency   done clear
  C)
   excessive nutrient availability done clear
  D)
   absence of herbivores in the lake done clear
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• question_answer25)
  When rain is accompanied by a thunderstorm, the collected rain water will have a pH value
  A)
   slightly lower than that of rain water without thunderstorm   done clear
  B)
   slightly higher than that when the thunderstorm is not there done clear
  C)
   uninfluenced by occurrence of thunderstorm done clear
  D)
   which depends upon the amount of dust in air done clear
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• question_answer26)
  The smog is essentially caused by the presence of
  A)
   Oxides of sulphur and nitrogen   done clear
  B)
   \[{{O}_{2}}\]and\[{{N}_{2}}\] done clear
  C)
   \[{{O}_{2}}\] and\[{{O}_{3}}\] done clear
  D)
   \[{{O}_{3}}\]and \[{{N}_{2}}\] done clear
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• question_answer27)
  Identify the wrong statement in the following.
  A)
   Chlorofluorocarbons are responsible for ozone layer depletion. done clear
  B)
   Greenhouse effect is responsible for global warming. done clear
  C)
   Ozone layer does not permit infrared radiation from the sun to reach the earth.   done clear
  D)
   Acid rain is mostly because of oxides of nitrogen and sulphur. done clear
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• question_answer28)
  Identify the incorrect statement from the following.
  A)
   Ozone absorbs the intense ultraviolet radiation of the sun. done clear
  B)
   Depletion of ozone layer is because of its chemical reactions with chlorofluoro alkanes. done clear
  C)
   Ozone absorbs infrared radiation.   done clear
  D)
   Oxides of nitrogen in the atmosphere can cause the depletion of ozone layer. done clear
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• question_answer29)
  What is DDT among the following?
  A)
   Greenhouse gas done clear
  B)
   A fertilizer done clear
  C)
   Biodegradable pollutant done clear
  D)
   Non-biodegradable pollutant   done clear
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• question_answer30)
  The gas leaked from a storage tank of the Union Carbide plant in Bhopal gas tragedy was
  A)
   Methyl isocyanate            done clear
  B)
   Methylamine done clear
  C)
   Ammonia            done clear
  D)
          Phosgene done clear
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• question_answer31)
  The substance which is not regarded as a pollutant?
  A)
   \[N{{O}_{2}}\]                        done clear
  B)
   \[C{{O}_{2}}\]   done clear
  C)
   \[{{O}_{3}}\]                  done clear
  D)
          Hydrocarbons done clear
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• question_answer32)
  The greatest affinity for haemoglobin is shown by which of the following:
  A)
   NO                    done clear
  B)
   CO done clear
  C)
   \[{{O}_{2}}\]                 done clear
  D)
          \[C{{O}_{2}}\] done clear
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• question_answer33)
  Which of the following is not involved in the formation of photochemical smog?
  A)
   Hydrocarbon                 done clear
  B)
   NO done clear
  C)
   \[S{{O}_{2}}\]                   done clear
  D)
          \[{{O}_{3}}\] done clear
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• question_answer34)
  The false statement among the followings :
  A)
   The average residence time of NO is one month   done clear
  B)
   Limestone acts as a sink for \[S{{O}_{x}}\] done clear
  C)
   \[S{{O}_{x}}\] can be removed from flue gases by passing through a solution of citrate ions done clear
  D)
   Ammonia acts as a sink for \[N{{O}_{x}}\] done clear
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• question_answer35)
  The statement which is not correct about control of particulate pollution
  A)
   In electrostatic precipitator, the particulates are made to acquire positive charge which are then attracted by the negative electrode and removed   done clear
  B)
   Gravity settling chamber removes larger particles from the air done clear
  C)
   Cyclone collector removes fine particles in the diameter range 5-20 microns done clear
  D)
   Wet scrubbers are used to wash away all types of particulates done clear
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• question_answer36)
  Which of the following statements about polar stratosphere clouds (PSCs) is not correct?
  A)
   PSCs do not react with chlorine nitrate and HCL   done clear
  B)
   Type I clouds are formed at about \[-\,77{}^\circ C\] and contain solid \[HN{{O}_{3}}.3{{H}_{2}}O\] done clear
  C)
   Type II clouds are formed at about \[-\,85{}^\circ C\]and contain some ice done clear
  D)
   A tight whirlpool of wind called Polar Vortex is formed which surrounds Antarctica done clear
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• question_answer37)
   Minamata disease is due to pollution of
  A)
   aresenic into the atmosphere done clear
  B)
   organic waste into drinking water done clear
  C)
   oil spill in water done clear
  D)
   industrial waste mercury into fishing water   done clear
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• question_answer38)
   BOD is connected with
  A)
   microbes and organic matter   done clear
  B)
   organic matter done clear
  C)
   microbes done clear
  D)
   None of these done clear
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• question_answer39)
  Eutrophication causes reduction in
  A)
   dissolved oxygen              done clear
  B)
   nutrients done clear
  C)
   dissolved salts      done clear
  D)
          All of these done clear
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• question_answer40)
  Which among the following statements is falser
  A)
   Oil slick in sea water increases D.O. value   done clear
  B)
   The main reason for river water pollution is industrial and domestic sewage discharge done clear
  C)
   Surface water contains a lot of organic matter mineral nutrients and radioactive materials done clear
  D)
   Oil spill in sea water causes heavy damage to fishery done clear
  View Solution play_arrow

• question_answer41)
  Presence of which of the following fuel gas in the exhaust fumes shows incomplete combustion of fuel?
  A)
   Sulphur dioxide done clear
  B)
   Carbon monoxide and water vapour done clear
  C)
   Carbon monoxide   done clear
  D)
   Nitrogen dioxide done clear
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• question_answer42)
  Which one of the following statements about ozone and ozone layer is true?
  A)
   Ozone layer is beneficial to us because ozone cuts out the ultraviolet radiation of the sun   done clear
  B)
   The conversion of ozone to oxygen is an endothermic reaction done clear
  C)
   Ozone has a triatomic linear molecule done clear
  D)
   None of these done clear
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