question_answer 1)
Oxides of sulphur \[(S{{O}_{2}},S{{O}_{3}})\]are due to
A)
burning of sulphur containing fossil fuel done
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B)
roasting and smelting of sulphide ore done
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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_answer 2)
Which of the following statements is true about photochemical smog?
A)
It is reducing in nature. done
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B)
It is formed in winter. done
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C)
It is a sulphurous smog. done
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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
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question_answer 3)
\[S{{O}_{2}}\] 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
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B)
Both I and III done
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C)
I, II and IV done
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D)
I, II and III done
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question_answer 4)
\[S{{O}_{2}}\] 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
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B)
non-regenerative process done
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C)
desulphonation process done
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D)
regenerative process done
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question_answer 5)
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
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B)
\[S{{ }_{1}},\,\,{{S}_{2}}\] and \[{{S}_{3}}\] only done
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C)
\[S{{ }_{1}},\,\,{{S}_{2}}\] and \[{{S}_{4}}\] only done
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D)
\[S{{ }_{2}},\,\,{{S}_{3}}\] and \[{{S}_{4}}\] done
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question_answer 6)
Select the correct statement(s).
A)
Above the troposphere, between 10 and 50 km above sea level lies stratosphere done
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B)
Troposphere is a turbulent, dusty zone containing air, much water vapours and cloud formation done
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C)
Stratosphere contains \[{{N}_{2}},\] \[{{O}_{2}}\] and \[{{O}_{3}}\] and little water vapours done
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D)
All of the above are correct statements done
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question_answer 7)
Which of the following statement is not true?
A)
pH of drinking water should be between 5.5-9.5 done
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B)
Concentration of DO below 6 ppm is good for the growth of fish done
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C)
Clean water would have a BOD value of less than ppm. done
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D)
Oxides of sulphur, nitrogen and carbon are the most widespread air pollutant. done
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question_answer 8)
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
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B)
remains unchanged done
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C)
decreased done
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D)
can't be predicted done
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question_answer 9)
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
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B)
II, III and IV done
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C)
I, II and III done
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D)
Both I and IV done
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question_answer 10)
Identify the incorrect statement from the following:
A)
Oxides of nitrogen in the atmosphere can cause the depletion of ozone layer done
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B)
Ozone absorbs infrared radiation done
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C)
Depletion of ozone layer is because of its chemical reactions with chlorofluoroalkanes done
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D)
Ozone absorbs the intense ultraviolet radiation of the sun done
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question_answer 11)
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
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B)
A\[\to \]2, B\[\to \]5, C\[\to \]3, D\[\to \]1 done
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C)
A\[\to \]3, B\[\to \]1, C\[\to \]4, D\[\to \]2 done
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D)
A\[\to \]4, B\[\to \]2, C\[\to \]1, D\[\to \]5 done
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question_answer 12)
Which of the following is not a consequence of greenhouse effect?
A)
Climatic conditions will be changed. done
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B)
Plants in warmer climates with adequate rainfall would grow faster. done
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C)
The incidence of infectious diseases is likely to increase. done
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D)
Malaria will be controlled as the mosquitoes will not survive. done
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question_answer 13)
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
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B)
increase in the amount of dissolved oxygen done
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C)
decrease in the amount of dissolved oxygen in water done
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D)
clogging of gills by mud done
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question_answer 14)
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
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B)
using ethanol-mixed petrol done
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C)
using unleaded petrol done
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D)
Using MTBE loaded petrol done
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question_answer 15)
An example of chemical toxics is
A)
removing water from industrial reactions done
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B)
utilizing ammonia instead of vinegar done
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C)
eliminating the formation of chlorinated organics in paper done
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D)
storing BPA (Bis-phenol A) in plastic bottles done
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question_answer 16)
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
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B)
\[C{{a}_{3}}{{(P{{O}_{4}})}_{2}}.\,3Ca{{F}_{2}}\] done
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C)
\[3C{{a}_{3}}{{(P{{O}_{4}})}_{2}}.\,Ca{{F}_{2}}\] done
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D)
\[3C{{a}_{3}}{{(P{{O}_{4}})}_{2}}.\,3Ca{{F}_{2}}\] done
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question_answer 17)
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
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B)
NO is oxidized to \[N{{O}_{2}}\] and \[{{H}_{2}}S\] is reduced to \[{{H}_{2}}S{{O}_{4}}\] done
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C)
NO is reduced to \[N{{H}_{3}}\] and \[{{H}_{2}}S\] is oxidized to sulphur done
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D)
NO is reduced to \[{{N}_{2}}\] and \[{{H}_{2}}S\] is oxidized to sulphur done
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question_answer 18)
Oxides of sulphur and nitrogen can be removed by scrubbing with
A)
\[Ca{{(OH)}_{2}}\] done
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B)
\[{{H}_{2}}S{{O}_{4}}\] done
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C)
Both [a] and [b] done
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D)
None of these done
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question_answer 19)
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
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B)
Fluoride done
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C)
Lead done
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D)
Nitrate done
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question_answer 20)
The chemical entities present in thermosphere of the atmosphere are
A)
\[{{O}^{+2}},{{O}^{+}},N{{O}^{+}}\] done
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B)
\[{{O}_{3}}\] done
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C)
\[{{N}_{2}},{{O}_{2}},C{{O}_{2}},{{H}_{2}}O\] done
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D)
\[{{O}_{3}},{{O}^{+}}_{2},{{O}_{2}}\] done
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question_answer 21)
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_answer 22)
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_answer 23)
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_answer 24)
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_answer 25)
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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