NEET Chemistry Environmental Chemistry / पर्यावरणीय रसायन Question Bank

done Self Evaluation Test - Environmental Chemistry Total Questions - 60

• question_answer1)
  Which of the following statement is false?
  A)
  London smog is oxidising in nature done clear
  B)
  Photochemical smog causes irritation in eyes done clear
  C)
  London smog is a mixture of smoke and fog done clear
  D)
  Photochemical smog results in the formation of PAN done clear
  View Solution play_arrow

• question_answer2)
  Which of the following acts as a sink for CO?
  A)
  Plants done clear
  B)
  Haemoglobin done clear
  C)
  Microorganisms present in the soil done clear
  D)
  Oceans done clear
  View Solution play_arrow

• question_answer3)
  Global warming is due to increase of:
  A)
  methane and nitrous oxide in atmosphere. done clear
  B)
  methane and \[C{{O}_{2}}\] in atmosphere. done clear
  C)
  methane and \[{{O}_{2}}\] in atmosphere. done clear
  D)
  methane and CO in atmosphere. done clear
  View Solution play_arrow

• question_answer4)
  Which of the following statements about the depletion of ozone layer is correct?
  A)
  The problem of ozone depletion is less serious at poles because \[N{{O}_{2}}\] solidifies and is not available for consuming \[CI{{O}^{\bullet }}\] radicals. done clear
  B)
  The problem of ozone depletion is more serious at poles because ice crystals in the clouds over poles act as catalyst for photochemical reactions involving the decomposition of ozone of \[C{{l}^{\bullet }}\]  and \[CI{{O}^{\bullet }}\] radicals. done clear
  C)
  Freons, chlorofluorocarbons, are inert. Chemically, they do not react with ozone in stratosphere. done clear
  D)
  Oxides of nitrogen also do not react with ozone in stratosphere. done clear
  View Solution play_arrow

• question_answer5)
  Excess nitrate in drinking water can cause
  A)
  methemoglobinemia done clear
  B)
  kidney damage done clear
  C)
  liver damage done clear
  D)
  laxative effect done clear
  View Solution play_arrow

• question_answer6)
  Soil is polluted by

  I. pesticides

  II. synthetic fertilizers

  III. green manure

  Choose the correct option.

  A)
  I and III             done clear
  B)
  I and II done clear
  C)
  II and III            done clear
  D)
  I, II and III done clear
  View Solution play_arrow

• question_answer7)
  Identify the pollutant gases largely responsible for the discoloured and lustreless nature of marble of the Taj Mahal?
  A)
  \[{{O}_{3}}\] and \[C{{O}_{2}}\]          done clear
  B)
  \[C{{O}_{2}}\] and \[N{{O}_{2}}\] done clear
  C)
  \[S{{O}_{2}}\] and\[N{{O}_{2}}\]     done clear
  D)
  \[S{{O}_{2}}\] and \[{{O}_{3}}\] done clear
  View Solution play_arrow

• question_answer8)
  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
  View Solution play_arrow

• question_answer9)
  Which of the following is the major cause of global warming?
  A)
  re-radiation of U.V. rays by \[C{{O}_{2}}\] and \[{{H}_{2}}O.\] done clear
  B)
  re-radiation of I.R. rays by \[C{{O}_{2}}\] and \[{{H}_{2}}O.\] done clear
  C)
  re-radiation of I.R. rays by \[{{O}_{2}}\] and\[{{N}_{2}}\]. done clear
  D)
  re-radiation of U.V. rays by \[{{O}_{2}}\] and \[{{N}_{2}}\]. done clear
  View Solution play_arrow

• question_answer10)
  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_answer11)
  Phosphate fertilizers when added to water leads to
  A)
  increased growth of decomposers. done clear
  B)
  reduced algal growth. done clear
  C)
  increased algal growth. done clear
  D)
  nutrient enrichment (eutrophication). done clear
  View Solution play_arrow

• question_answer12)
  Phosphate pollution is caused by
  A)
  sewage and agricultural fertilizers done clear
  B)
  weathering of phosphate rocks only done clear
  C)
  agricultural fertilizers only done clear
  D)
  phosphate rocks and sewage done clear
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• question_answer13)
  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_answer14)
  Minamata disease of Japan is due to pollution of
  A)
  Aresenic             done clear
  B)
  Lead done clear
  C)
  Cyanide             done clear
  D)
  Mercury done clear
  View Solution play_arrow

• question_answer15)
  Which causes death of fishes in water bodies polluted by sewage?
  A)
  Foul smell done clear
  B)
  Pathogens done clear
  C)
  Clogging of gills by silt done clear
  D)
  Decrease in D.O. done clear
  View Solution play_arrow

• question_answer16)
  Photochemical smog consists of excessive amount of X, in addition to aldehydes, ketones, peroxyacetyl nitrate (PAN), and so forth X is:
  A)
  CO                   done clear
  B)
  \[C{{H}_{4}}\] done clear
  C)
  \[{{O}_{3}}\]                            done clear
  D)
  \[C{{O}_{2}}\] done clear
  View Solution play_arrow

• question_answer17)
  Water sample is reported to be highly polluted if BOD (Biological Oxygen Demand) value of sample becomes
  A)
  more than 17 ppm. done clear
  B)
  equal to 10 ppm. done clear
  C)
  equal to 5 ppm.              done clear
  D)
  less than 5 ppm. done clear
  View Solution play_arrow

• question_answer18)
  The region which is greatly affected by air pollution is
  A)
  thermosphere      done clear
  B)
  stratosphere done clear
  C)
  troposphere        done clear
  D)
  mesosphere done clear
  View Solution play_arrow

• question_answer19)
  Which of the following is most abundant hydrocarbon pollutant?
  A)
  Butane              done clear
  B)
  Ethane done clear
  C)
  Methane            done clear
  D)
  Propane done clear
  View Solution play_arrow

• question_answer20)
  The aromatic compounds present as particulates are
  A)
  polycyclic aromatic hydrocarbons done clear
  B)
  benzene done clear
  C)
  toluene done clear
  D)
  nitrobenzene done clear
  View Solution play_arrow

• question_answer21)
  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
  View Solution play_arrow

• question_answer22)
  BOD is connected with
  A)
  microbes and organic matter. done clear
  B)
  organic matter. done clear
  C)
  microbes. done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer23)
  What is the concentration of dissolved oxygen in cold water?
  A)
  5 ppm                           done clear
  B)
  10 ppm done clear
  C)
  200,000 ppm    done clear
  D)
  100 ppm done clear
  View Solution play_arrow

• question_answer24)
  Green chemistry means such reactions 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
  View Solution play_arrow

• question_answer25)
  Use of which of the following solvent in dry cleaning will result in less harm to ground water?
  A)
  \[C{{l}_{2}}C=CC{{l}_{2}}\]               done clear
  B)
  Liquid \[C{{O}_{2}}\] done clear
  C)
  \[{{H}_{2}}{{O}_{2}}\]                                   done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer26)
  The statement which is not true
  A)
  \[N{{O}_{2}}\] does not play any role in photochemical smog done clear
  B)
  \[S{{O}_{3}}\] is more harmful air polluntant than \[S{{O}_{2}}\] done clear
  C)
  \[S{{O}_{2}}\] dos not affect larynx (voice box) done clear
  D)
  NO is more toxic to living tissues than \[N{{O}_{2}}\] done clear
  View Solution play_arrow

• question_answer27)
  Synthesis of ethanal commercially from which of the following reagent is the part of green chemistry?
  A)
  \[C{{H}_{3}}C{{H}_{2}}OH\]              done clear
  B)
  \[C{{H}_{2}}=C{{H}_{2}}\] done clear
  C)
  \[HC\equiv CH\]             done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer28)
  Greenhouse gases can be arranged in 'Global Warming Potential' sequence as
  A)
  \[{{N}_{2}}O>CFC>C{{H}_{4}}>C{{O}_{2}}\] done clear
  B)
  \[CFC>{{N}_{2}}O>C{{H}_{4}}>C{{O}_{2}}\] done clear
  C)
  \[CFC>C{{O}_{2}}>{{N}_{2}}O>C{{H}_{4}}\] done clear
  D)
  \[C{{O}_{2}}>CFC>{{N}_{2}}O>C{{H}_{4}}\] done clear
  View Solution play_arrow

• question_answer29)
  Addition of phosphate fertilisers to water bodies causes:
  A)
  Increase in amount of dissolved oxygen in water done clear
  B)
  Deposition of calcium phosphate done clear
  C)
  Increase in fish population done clear
  D)
  Enhanced growth of algae done clear
  View Solution play_arrow

• question_answer30)
  Which forms the part of hazy fumes of photochemical smog?
  A)
  \[S{{O}_{2}}\]        done clear
  B)
  Nitrogen dioxide done clear
  C)
  PAN formation               done clear
  D)
  Aldehydes done clear
  View Solution play_arrow

• question_answer31)
  Which one of the following depletes ozone layer?
  A)
  CO                               done clear
  B)
  NO and freons done clear
  C)
  \[S{{O}_{2}}\]                          done clear
  D)
  \[C{{O}_{2}}\] done clear
  View Solution play_arrow

• question_answer32)
  Which of the following chemical, harmful to ozone, is released by chlorofluorocarbon?
  A)
  Sulphur dioxide   done clear
  B)
  Fluorine done clear
  C)
  Chlorine             done clear
  D)
  Nitrogen dioxide done clear
  View Solution play_arrow

• question_answer33)
  In Antarctica ozone depletion is due to the formation of following compound
  A)
  acrolein done clear
  B)
  peroxyacetyl nitrate done clear
  C)
  \[S{{O}_{2}}\]and \[S{{O}_{3}}\]         done clear
  D)
  chlorine nitrate done clear
  View Solution play_arrow

• question_answer34)
  Ozone is an important constituent of stratosphere because it
  A)
  destroys bacteria which are harmful to human life. done clear
  B)
  prevents the formation of smog over large cities. done clear
  C)
  removes poisonous gases of the atmosphere by reacting with them. done clear
  D)
  absorbs ultraviolet radiation which is harmful to human life. 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
  View Solution play_arrow

• question_answer36)
  Green house gases
  A)
  allow shorter wavelength to enter earth's atmosphere while doesn't allow longer wave-length to leave the earth's atmosphere. done clear
  B)
  allow longer wavelength to enter earth atmosphere while doesn't allow shorter wave-length to leave the surface done clear
  C)
  do not have wavelength specific character. done clear
  D)
  show wavelength specific behaviour near the earth while far from earth these have wavelength independent behaviour. done clear
  View Solution play_arrow

• question_answer37)
  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 \[{{O}_{3}}\]  ands \[C{{H}_{4}}\] in the atmosphere done clear
  D)
  \[{{N}_{2}}O\] and chlorofluorohydrocarbons in the atmosphere done clear
  View Solution play_arrow

• question_answer38)
  Carbon monoxide (CO) is harmful to man because
  A)
  it forms carbolic acid. done clear
  B)
  it generates excess \[C{{O}_{2}}\] done clear
  C)
  it is carcinogenic. done clear
  D)
  it competes with \[{{O}_{2}}\], for haemoglobin. done clear
  View Solution play_arrow

• question_answer39)
  Which of the following can control the photochemical smog?

  [A] Use of catalytic converters in automobiles.

  [B] Plantation of trees like pinus, pyrus vitis etc.

  [C] Using less sulphur containing fossil fuels.

  A)
  A and C            done clear
  B)
  B done clear
  C)
  A and B            done clear
  D)
  A, B and C done clear
  View Solution play_arrow

• question_answer40)
  High concentration of which of the following in atmosphere leads to stiffness of flower buds which eventually fall off from plants?
  A)
  \[N{{O}_{2}}\] done clear
  B)
  \[S{{O}_{2}}\]  done clear
  C)
  CFC                  done clear
  D)
  Smog done clear
  View Solution play_arrow

• question_answer41)
  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
  View Solution play_arrow

• question_answer42)
  Ozone hole refers to
  A)
  increase in concentration of ozone. done clear
  B)
  hole in ozone layer. done clear
  C)
  reduction in thickness of ozone layer in troposphere. done clear
  D)
  reduction in thickness of ozone layer in stratsophere. done clear
  View Solution play_arrow

• question_answer43)
  Which one of the following statements is not
  A)
  Dissolved oxygen (DO) in cold water can reach a concentration upto 10 ppm. done clear
  B)
  Clean water would have a BOD value of 5 ppm. done clear
  C)
  Fluoride deficiency in drinking water is harmful. Soluble fluoride is often used to bring its concentration upto 1 ppm. done clear
  D)
  When the pH of rain water is higher than 6.5, it is called acid rain. done clear
  View Solution play_arrow

• question_answer44)
  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
  View Solution play_arrow

• question_answer45)
  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
  View Solution play_arrow

• question_answer46)
  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_answer47)
  The irritant red haze in the traffic and congested places is due to presence of which of the following?

  (i) Oxides of sulphur

  (ii) Oxides of nitrogen

  (iii) Carbon dioxide

  (iv) Mists, smoke and dust

  (v) Smog

  A)
  (i), (iv) and (v)                done clear
  B)
  (iii) only done clear
  C)
  (ii) only              done clear
  D)
  (ii) and (v) done clear
  View Solution play_arrow

• question_answer48)
  Which one of the following substances used in dry cleaning is a better strategy to control environmental pollution?
  A)
  Sulphur dioxide  done clear
  B)
  Carbon dioxide done clear
  C)
  Nitrogen dioxide     done clear
  D)
  Tetrachloroethylene                    done clear
  View Solution play_arrow

• question_answer49)
  In a coal fired power plant, electrostatic precipitators are installed to control emission of
  A)
  \[S{{O}_{2}}\]                          done clear
  B)
  \[N{{O}_{x}}\]  done clear
  C)
  SPM                 done clear
  D)
  CO done clear
  View Solution play_arrow

• question_answer50)
  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
  View Solution play_arrow

• question_answer51)
  Lichens do not like to grow in cities
  A)
  because of absence of the right type of algae and fungi done clear
  B)
  because of lack of moisture done clear
  C)
  because of \[S{{O}_{2}}\] pollution done clear
  D)
  because natural habitat is missing done clear
  View Solution play_arrow

• question_answer52)
  Which of the following statement(s) is/are correct?

  (i) Classical smog is a mixture of smoke fog and sulphur dioxide.

  (ii) Classical smog is also called oxidising smog

  (iii) Hydrocarbons \[N{{O}_{2}}\] and PAN are components of photochemical smog.

  A)
  (i) and (iii)          done clear
  B)
  (i) and (ii) done clear
  C)
  (iii) only             done clear
  D)
  (i), (ii) and (iii) done clear
  View Solution play_arrow

• question_answer53)
  Which one of the following pairs is mismatched
  A)
  Fossil fuel burning           - release of \[C{{O}_{2}}\] done clear
  B)
  Nuclear power                - radioactive wastes done clear
  C)
  Solar energy                   - Greenhouse effect done clear
  D)
  Biomass burning             - release of \[C{{O}_{2}}\] done clear
  View Solution play_arrow

• question_answer54)
  In almost all Indian metropolitan cities like Delhi, the major atmospheric pollutant(s) is/are
  A)
  suspended particulate matter (SPM) done clear
  B)
  oxides of sulphur done clear
  C)
  carbon dioxide and carbon monoxide done clear
  D)
  oxides of nitrogen done clear
  View Solution play_arrow

• question_answer55)
  Which of the following statements are not

  (i) \[{{F}^{-}}\] ion concentration above 2 ppm causes brown mottling in teeth.

  (ii) Excessive \[{{F}^{-}}\] (over 10 ppm) causes harmful effect to bones and teeth.

  (iii) Excessive lead in drinking water causes disease methemoglobinemia

  (iv) Deficiency of sulphate in drinking water causes laxative effect.

  A)
  (ii) and (iv)         done clear
  B)
  (ii) and (iii) done clear
  C)
  (ii), (iii) and (iv)  done clear
  D)
  (iii) and (iv) done clear
  View Solution play_arrow

• question_answer56)
  Which of the following statements is incorrect?
  A)
  Smoke particulates consist of solid or mixture of solid and liquid particles formed during combustion of organic matter. done clear
  B)
  Herbicides and insecticides that miss their target and travel through air form mists. done clear
  C)
  Organic solvents, metals and metallic oxides form fume particles done clear
  D)
  None of these done clear
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• question_answer57)
  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 storing substances done clear
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• question_answer58)
  Which of the following statement(s) is/are true about waste recycling?

  (i) Clothes can be made from recycled plastic waste.

  (ii) Fuel that has high octane rating and contains no lead can be obtained from plastic waste.

  (iii) Technology has now been developed to produce electricity from the garbage.

  A)
  (ii) only              done clear
  B)
  (ii) and (iii) done clear
  C)
  (iii) only             done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer59)
  Which of the following is/are formed when ozone reacts with the unburnt hydrocarbons in polluted air?

  (i) Formaldehyde

  (ii) Acrolein

  (iii) Peroxyacetyl nitrate

  (iv) Formic acid

  A)
  (i) and (iv)                      done clear
  B)
  (ii) only done clear
  C)
  (iii) only             done clear
  D)
  (i), (ii) and (iii) done clear
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• question_answer60)
  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 5 ppm. done clear
  D)
  Oxides of sulphur, nitrogen and carbon are the most widespread air pollutant. done clear
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