JEE Main & Advanced Chemistry Environmental Chemistry / पर्यावरणीय रसायन Question Bank

done Mock Test - Environmental Chemistry Total Questions - 25

• question_answer1)
  Oxides of sulphur \[(S{{O}_{2}},S{{O}_{3}})\]are due to
  A)
  burning of sulphur containing fossil fuel done clear
  B)
  roasting and smelting of sulphide ore done clear
  C)
  oxidation by air, \[{{H}_{2}}{{O}_{2}}\] and \[{{O}_{3}}\] done clear
  D)
  All of the above done clear
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• question_answer2)
  Which of the following statements is true about photochemical smog?
  A)
  It is reducing in nature. done clear
  B)
  It is formed in winter. done clear
  C)
  It is a sulphurous smog. done clear
  D)
  Components of the smog, NO and \[{{O}_{3}}\], irritate    the nose and throat and their high concentration causes headache, chest pain, dryness of the throat, cough and difficulty in breathing. done clear
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• question_answer3)

  \[S{{O}_{2}}\] as pollutant can be controlled by

  (I) using solar energy, nuclear energy, hydroelectric energy.

  (II) low sulphur fuels, natural gas.

  (Ill) desulphonation of high sulphur coal and oil before burning by FGD.

  (IV) using water under high pressure. Correct methods are

  A)
  Both I and II      done clear
  B)
  Both I and III done clear
  C)
  I, II and IV         done clear
  D)
  I, II and III done clear
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• question_answer4)

  \[S{{O}_{2}}\] can be removed by using the following

  \[S{{O}_{2}}+2{{H}_{2}}S\to 2{{H}_{2}}O+3S\]

  \[S{{O}_{2}}+N{{a}_{2}}S{{O}_{3}}+{{H}_{2}}O\to 2NaHS{{O}_{3}}\]

  This is called

   
  A)
  synergistic process done clear
  B)
  non-regenerative process done clear
  C)
  desulphonation process done clear
  D)
  regenerative process done clear
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• question_answer5)

  Consider the following statement and select the correct option:

  \[{{S}_{1}}\]: Dust is the non-viable particle.

  \[{{S}_{2}}\]: Particulates acquire negative charge and are attracte by the positive electrode.

  \[{{S}_{3}}\]: \[{{O}_{2}}\] is a greenhouse gas.

  \[{{S}_{4}}\]: Algae is a viable particulate.

  A)
  \[{{S}_{1}}\] and \[{{S}_{2}}\] only done clear
  B)
  \[S{{  }_{1}},\,\,{{S}_{2}}\] and \[{{S}_{3}}\] only done clear
  C)
  \[S{{  }_{1}},\,\,{{S}_{2}}\] and \[{{S}_{4}}\] only done clear
  D)
  \[S{{  }_{2}},\,\,{{S}_{3}}\] and \[{{S}_{4}}\] done clear
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• question_answer6)
  Select the correct statement(s).
  A)
  Above the troposphere, between 10 and 50 km above sea level lies stratosphere done clear
  B)
  Troposphere is a turbulent, dusty zone containing air, much water vapours and cloud formation done clear
  C)
  Stratosphere contains \[{{N}_{2}},\] \[{{O}_{2}}\] and \[{{O}_{3}}\] and little water vapours done clear
  D)
  All of the above are correct statements done clear
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• question_answer7)
  Which 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 ppm. done clear
  D)
  Oxides of sulphur, nitrogen and carbon are the most widespread air pollutant. done clear
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• question_answer8)
  Consider the following equilibrium, \[Hb{{O}_{2}}+CO\rightleftharpoons HbCO+{{O}_{2}}\] When [HbCO] = 3%, to 4% oxygen carrying capacity of blood is
  A)
  increased done clear
  B)
  remains unchanged done clear
  C)
  decreased           done clear
  D)
  can't be predicted done clear
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• question_answer9)

  Consider the following diseases from which human being are suffered,

  (I) Asthma

  (II) Dyspepsia

  (III) Bronchitis

  (IV) Emphysema

  Diseases due to \[S{{O}_{2}}\] are

  A)
  I, III and IV        done clear
  B)
  II, III and IV done clear
  C)
  I, II and III         done clear
  D)
  Both I and IV done clear
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• question_answer10)
  Identify the incorrect statement from the following:
  A)
  Oxides of nitrogen in the atmosphere can cause the depletion of ozone layer done clear
  B)
  Ozone absorbs infrared radiation done clear
  C)
  Depletion of ozone layer is because of its chemical reactions with chlorofluoroalkanes done clear
  D)
  Ozone absorbs the intense ultraviolet radiation of the sun done clear
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• question_answer11)
  Match List I with List II and select the correct answer using the codes given below the lists:

  List I (Pollutant)	List II (Source)
  A. Microorganisms	1. Chemical fertilizers
  B. Plant nutrients	2. Abandoned coal mines
  C. Sediments	3. Domestic sewage
  D. Mineral acids	4. Erosion of soil by strip mining
  	5. Detergents

   
  A)
  A\[\to \]1, B\[\to \]3, C\[\to \]2, D\[\to \]4 done clear
  B)
  A\[\to \]2, B\[\to \]5, C\[\to \]3, D\[\to \]1 done clear
  C)
  A\[\to \]3, B\[\to \]1, C\[\to \]4, D\[\to \]2 done clear
  D)
  A\[\to \]4, B\[\to \]2, C\[\to \]1, D\[\to \]5 done clear
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• question_answer12)
  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_answer13)
  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_answer14)
  Leaded petrol used to be the primary source of air-borne lead emission. This problem has been overcome by
  A)
  using TEL loaded petrol done clear
  B)
  using ethanol-mixed petrol done clear
  C)
  using unleaded petrol done clear
  D)
  Using MTBE loaded petrol done clear
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• question_answer15)
  An example of chemical toxics is
  A)
  removing water from industrial reactions done clear
  B)
  utilizing ammonia instead of vinegar done clear
  C)
  eliminating the formation of chlorinated organics in paper done clear
  D)
  storing BPA (Bis-phenol A) in plastic bottles done clear
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• question_answer16)
  Deficiency of (\[{{F}^{-}}\]) in drinking water causes tooth decay. Its International 8tandard limit makes the enamel on tooth much harder by converting hydroxyapatite into much harder
  A)
  \[C{{a}_{3}}{{(P{{O}_{4}})}_{2}}.\,Ca{{F}_{2}}\] done clear
  B)
  \[C{{a}_{3}}{{(P{{O}_{4}})}_{2}}.\,3Ca{{F}_{2}}\] done clear
  C)
  \[3C{{a}_{3}}{{(P{{O}_{4}})}_{2}}.\,Ca{{F}_{2}}\] done clear
  D)
  \[3C{{a}_{3}}{{(P{{O}_{4}})}_{2}}.\,3Ca{{F}_{2}}\] done clear
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• question_answer17)
  NO and \[{{H}_{2}}S\] both the pollutants of air. NO is \[{{H}_{2}}S\] remover while \[{{H}_{2}}S\] is NO remover. Under these effect,
  A)
  NO is oxidized to \[N{{O}_{2}}\] and \[{{H}_{2}}S\] is oxidized to \[{{H}_{2}}S{{O}_{4}}\] done clear
  B)
  NO is oxidized to \[N{{O}_{2}}\] and \[{{H}_{2}}S\] is reduced to \[{{H}_{2}}S{{O}_{4}}\] done clear
  C)
  NO is reduced to \[N{{H}_{3}}\] and \[{{H}_{2}}S\] is oxidized to sulphur done clear
  D)
  NO is reduced to \[{{N}_{2}}\] and \[{{H}_{2}}S\] is oxidized to sulphur done clear
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• question_answer18)
  Oxides of sulphur and nitrogen can be removed by scrubbing with
  A)
  \[Ca{{(OH)}_{2}}\] done clear
  B)
  \[{{H}_{2}}S{{O}_{4}}\] done clear
  C)
  Both [a] and [b] done clear
  D)
  None of these done clear
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• question_answer19)
  The concentration of fluoride, lead, nitrate and iron in a water sample from an underground lake was found to be 1000 ppb, 40 ppb, 100 ppm and 0.2 ppm, respectively. This water is unsuitable for drinking due to high concentration of
  A)
  Iron                   done clear
  B)
  Fluoride done clear
  C)
  Lead                 done clear
  D)
  Nitrate done clear
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• question_answer20)
  The chemical entities present in thermosphere of the atmosphere are
  A)
  \[{{O}^{+2}},{{O}^{+}},N{{O}^{+}}\] done clear
  B)
  \[{{O}_{3}}\] done clear
  C)
  \[{{N}_{2}},{{O}_{2}},C{{O}_{2}},{{H}_{2}}O\] done clear
  D)
  \[{{O}_{3}},{{O}^{+}}_{2},{{O}_{2}}\] done clear
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• question_answer21)
  How many of the following compounds are gaseous air pollutants?

  (I) CO	(II) NO
  (III) \[N{{O}_{2}}\]	(IV) \[C{{O}_{2}}\]
  (V) \[S{{O}_{2}}\]	(VI) \[{{H}_{2}}S\]
  (VII) \[S{{O}_{3}}\]	(VIII) \[{{O}_{3}}\]
  (IX) Fumes	(X) Smoke

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• question_answer22)
  How many gases are responsible for greenhouse effect?

  (I) \[C{{O}_{2}}\]	(II) CO
  (III) \[C{{H}_{4}}\]	(IV) \[{{N}_{2}}O\]
  (V) NO	(VI) \[N{{O}_{2}}\]
  (VII) Chloroflurocarbons (CFCs)	(VIII) \[{{O}_{3}}\]
  (IX) Water vapours	(X) \[S{{o}_{2}}\]

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• question_answer23)
  How many gaseous species are present in   mesosphere and thermosphere?

  (I) \[{{O}_{2}}^{\oplus }\]	(II) \[{{O}_{2}}^{2-}\]
  (III)	(IV) \[N{{O}^{\oplus }}\]
  (V) \[{{N}_{2}}^{\oplus }\]	(VI) Atoms of C
  (VIII) \[{{O}^{\oplus }}\]	(VIII) Atoms of N
  (IX) Atoms of S	(X) Atoms of O

   
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• question_answer24)
  How many acids are present in acid rain?

  (I) \[{{H}_{2}}C{{O}_{3}}\]	(II) \[HCL{{O}_{4}}\]
  (III) \[{{H}_{2}}S{{O}_{4}}\]	(IV) \[HN{{O}_{3}}\]
  (V) HCI	(VI) \[{{H}_{3}}P{{O}_{4}}\]
  (VII) \[C{{H}_{3}}COOH\]

   
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• question_answer25)
  The co-existence of biotic components and abiotil   components is called an ecosystem. How many      of the following are abiotic components?

  (I) Micro-organisms	(II) Animals
  (III) Plants	(IV) \[C{{O}_{2}}\]
  (V) \[{{N}_{2}}\]	(VI) S
  (VII) P	(VIII) Proteins
  (IX) Carbohydrates	(X) Temperature
  (XI) Humidity

   
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