question_answer 1)
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
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question_answer 2)
Which of the following acts as a sink for CO?
A)
Plants done
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B)
Haemoglobin done
clear
C)
Microorganisms present in the soil done
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D)
Oceans done
clear
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question_answer 3)
Global warming is due to increase of:
A)
methane and nitrous oxide in atmosphere. done
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B)
methane and \[C{{O}_{2}}\] in atmosphere. done
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C)
methane and \[{{O}_{2}}\] in atmosphere. done
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D)
methane and CO in atmosphere. done
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question_answer 4)
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
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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
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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
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question_answer 5)
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
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question_answer 6)
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
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question_answer 7)
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
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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
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question_answer 8)
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_answer 9)
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
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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
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question_answer 10)
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_answer 11)
Phosphate fertilizers when added to water leads to
A)
increased growth of decomposers. done
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B)
reduced algal growth. done
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C)
increased algal growth. done
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D)
nutrient enrichment (eutrophication). done
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question_answer 12)
Phosphate pollution is caused by
A)
sewage and agricultural fertilizers done
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B)
weathering of phosphate rocks only done
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C)
agricultural fertilizers only done
clear
D)
phosphate rocks and sewage done
clear
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question_answer 13)
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
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B)
slightly higher than that when the thunderstorm is not there. done
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C)
uninfluenced by occurrence of thunderstorm. done
clear
D)
which depends upon the amount of dust in air. done
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question_answer 14)
Minamata disease of Japan is due to pollution of
A)
Aresenic done
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B)
Lead done
clear
C)
Cyanide done
clear
D)
Mercury done
clear
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question_answer 15)
Which causes death of fishes in water bodies polluted by sewage?
A)
Foul smell done
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B)
Pathogens done
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C)
Clogging of gills by silt done
clear
D)
Decrease in D.O. done
clear
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question_answer 16)
Photochemical smog consists of excessive amount of X, in addition to aldehydes, ketones, peroxyacetyl nitrate (PAN), and so forth X is:
A)
CO done
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B)
\[C{{H}_{4}}\] done
clear
C)
\[{{O}_{3}}\] done
clear
D)
\[C{{O}_{2}}\] done
clear
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question_answer 17)
Water sample is reported to be highly polluted if BOD (Biological Oxygen Demand) value of sample becomes
A)
more than 17 ppm. done
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B)
equal to 10 ppm. done
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C)
equal to 5 ppm. done
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D)
less than 5 ppm. done
clear
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question_answer 18)
The region which is greatly affected by air pollution is
A)
thermosphere done
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B)
stratosphere done
clear
C)
troposphere done
clear
D)
mesosphere done
clear
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question_answer 19)
Which of the following is most abundant hydrocarbon pollutant?
A)
Butane done
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B)
Ethane done
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C)
Methane done
clear
D)
Propane done
clear
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question_answer 20)
The aromatic compounds present as particulates are
A)
polycyclic aromatic hydrocarbons done
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B)
benzene done
clear
C)
toluene done
clear
D)
nitrobenzene done
clear
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question_answer 21)
The substance having the largest concentration in acid rain?
A)
\[{{H}_{2}}C{{O}_{3}}\] done
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B)
\[HN{{O}_{3}}\] done
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C)
\[HCl\] done
clear
D)
\[{{H}_{2}}S{{O}_{4}}\] done
clear
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question_answer 22)
BOD is connected with
A)
microbes and organic matter. done
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B)
organic matter. done
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C)
microbes. done
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D)
None of the above done
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question_answer 23)
What is the concentration of dissolved oxygen in cold water?
A)
5 ppm done
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B)
10 ppm done
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C)
200,000 ppm done
clear
D)
100 ppm done
clear
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question_answer 24)
Green chemistry means such reactions which:
A)
Produce colour during reactions. done
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B)
Reduce the use and production of hazardous chemicals. done
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C)
Are related to the depletion of ozone layer. done
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D)
Study the reactions in plants. done
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question_answer 25)
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
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B)
Liquid \[C{{O}_{2}}\] done
clear
C)
\[{{H}_{2}}{{O}_{2}}\] done
clear
D)
None of these done
clear
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question_answer 26)
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
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C)
\[S{{O}_{2}}\] dos not affect larynx (voice box) done
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D)
NO is more toxic to living tissues than \[N{{O}_{2}}\] done
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question_answer 27)
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
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B)
\[C{{H}_{2}}=C{{H}_{2}}\] done
clear
C)
\[HC\equiv CH\] done
clear
D)
All of these done
clear
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question_answer 28)
Greenhouse gases can be arranged in 'Global Warming Potential' sequence as
A)
\[{{N}_{2}}O>CFC>C{{H}_{4}}>C{{O}_{2}}\] done
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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
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question_answer 29)
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
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question_answer 30)
Which forms the part of hazy fumes of photochemical smog?
A)
\[S{{O}_{2}}\] done
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B)
Nitrogen dioxide done
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C)
PAN formation done
clear
D)
Aldehydes done
clear
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question_answer 31)
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
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question_answer 32)
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
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question_answer 33)
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
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question_answer 34)
Ozone is an important constituent of stratosphere because it
A)
destroys bacteria which are harmful to human life. done
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B)
prevents the formation of smog over large cities. done
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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_answer 35)
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
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B)
Gravity settling chamber removes larger particles from the air. done
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C)
Cyclone collector removes fine particles in the diameter range 5-20 microns. done
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D)
Wet scrubbers are used to wash away all types of particulates. done
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question_answer 36)
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
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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
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D)
show wavelength specific behaviour near the earth while far from earth these have wavelength independent behaviour. done
clear
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question_answer 37)
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
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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
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question_answer 38)
Carbon monoxide (CO) is harmful to man because
A)
it forms carbolic acid. done
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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
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question_answer 39)
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
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question_answer 40)
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
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question_answer 41)
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_answer 42)
Ozone hole refers to
A)
increase in concentration of ozone. done
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B)
hole in ozone layer. done
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C)
reduction in thickness of ozone layer in troposphere. done
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D)
reduction in thickness of ozone layer in stratsophere. done
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question_answer 43)
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
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question_answer 44)
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_answer 45)
Presence of which of the following fuel gas in the exhaust fumes shows incomplete combustion of fuel?
A)
Sulphur dioxide done
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B)
Carbon monoxide and water vapour done
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C)
Carbon monoxide done
clear
D)
Nitrogen dioxide done
clear
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question_answer 46)
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
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question_answer 47)
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
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question_answer 48)
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
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question_answer 49)
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
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question_answer 50)
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_answer 51)
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
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question_answer 52)
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
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question_answer 53)
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
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C)
Solar energy - Greenhouse effect done
clear
D)
Biomass burning - release of \[C{{O}_{2}}\] done
clear
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question_answer 54)
In almost all Indian metropolitan cities like Delhi, the major atmospheric pollutant(s) is/are
A)
suspended particulate matter (SPM) done
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B)
oxides of sulphur done
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C)
carbon dioxide and carbon monoxide done
clear
D)
oxides of nitrogen done
clear
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question_answer 55)
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
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question_answer 56)
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_answer 57)
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_answer 58)
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
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question_answer 59)
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_answer 60)
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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