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Environmental Issues. · Tamil Nadu Board STD 12 (Tamil - English Medium). 27 questions.

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27 questions · timed · auto-graded

MCQ 11 Mark
Identify the plant species that is not used as a live fence.
  • A
     Sesbania grandiflora
  • B
    Acacia species
  • ✓
    Petunia species
  • D
     Erythrina species
Answer
Correct option: C.
Petunia species
Petunia species
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MCQ 21 Mark
__________ is a plant species which acts as an indicator of Nitrate pollution.
  • ✓
     Petunia
  • B
     Lichens
  • C
    Gladiolus
  • D
    Pinus
Answer
Correct option: A.
 Petunia
 Petunia
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MCQ 31 Mark
Clean Development Mechanism (CDM) is defined in __________
  • A
    Copenhagen Acord
  • B
    Montreal Protocol
  • C
    Paris Agreement
  • ✓
    Kyoto Protocol
Answer
Correct option: D.
Kyoto Protocol
Kyoto Protocol
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MCQ 41 Mark
When does World Ozone Day is observed?
  • A
    June 17th
  • B
     December 1st
  • C
    October 12th
  • ✓
    September 16th
Answer
Correct option: D.
September 16th
September 16th
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MCQ 51 Mark
The ozone layer of __________ is called bad ozone.
  • A
     Stratosphere
  • B
    Mesosphere
  • ✓
    Troposphere
  • D
    Exosphere
Answer
Correct option: C.
Troposphere
Troposphere
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MCQ 61 Mark
__________ is the 100th Satellite launched to watch border surveillance.
  • A
    GSAT-6A
  • B
     SCAT SAT-I
  • C
     INSAT 3DR
  • ✓
     CARTOSAT-2
Answer
Correct option: D.
 CARTOSAT-2
 CARTOSAT-2
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MCQ 71 Mark
EIA stands for __________
  • A
     Ecological Information Analysis
  • B
     Environmental Information Assessment
  • C
     Environmental Impact Analysis
  • ✓
     Environmental Impact Assessment
Answer
Correct option: D.
 Environmental Impact Assessment
Environmental Impact Assessment
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MCQ 81 Mark
Which is not a true statement regarding rain water harvesting?
  • ✓
    Mitigates groundwater quality
  • B
    Reduces soil erosion
  • C
    Decreases soil salinity
  • D
    No wastage of land for storing
Answer
Correct option: A.
Mitigates groundwater quality
Mitigaes groundwater quality
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MCQ 91 Mark
Biochar is __________
(i) a kind of char coal used as a soil amendment
(ii) a potent way of sequestring carbon
(iii) made from biomass via pyrolysis
(iv) a notable solid, rich in carbon.
  • A
    (i) and (iii) is correct
  • B
    (ii) and (iv) is correct
  • C
    (i) and (ii) is correct
  • ✓
     all the above is correct.
Answer
Correct option: D.
 all the above is correct.
all the above is correct.
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MCQ 101 Mark
How many numbers of scared grooves were documented in tamil nadu?
  • A
     484
  • B
    844
  • ✓
    488
  • D
     448
Answer
Correct option: C.
488
 488
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MCQ 111 Mark
Which is not true with respect to prosopis juliflora?
  • A
     Invasive species native to Mexico
  • B
    Arrest wind erosion
  • C
     Absorb hazardous chemical from soil
  • ✓
    Decreases $O _2$content of water bodies
Answer
Correct option: D.
Decreases $O _2$content of water bodies
Decreases $O _2$ content of water bodies
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MCQ 121 Mark
Pick out the odd one out __________
  • A
    Biosphere reserve
  • B
    National Park
  • C
     Wild life sanctuaries
  • ✓
    Botanical gardens
Answer
Correct option: D.
Botanical gardens
Botanical gardens
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MCQ 131 Mark
Invasive species __________
  • A
    alter the soil system
  • B
     are more adapted
  • C
     are fast growing
  • ✓
    all the above
Answer
Correct option: D.
all the above
all the above
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MCQ 141 Mark
Who is celebrated as Forest Man of India?
  • A
    Anand Mohan Chakrabarthy
  • B
    Dr. M.S Swaminathan
  • ✓
     Jadav Molai Payeng
  • D
    Choudary Ram Dhan
Answer
Correct option: C.
 Jadav Molai Payeng
Jadav Molai Payeng
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MCQ 151 Mark
Total number of forestry extension centres in Tamil Nadu is __________
  • A
    16
  • ✓
    32
  • C
    18
  • D
    51
Answer
Correct option: B.
32
32
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MCQ 161 Mark
Identify the potent cause for deforestation.
  • ✓
    Agriculture
  • B
    Soil erosion
  • C
    Afforestation
  • D
    Forest fire
Answer
Correct option: A.
Agriculture
 Agriculture
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MCQ 171 Mark
Which is not reduced by deforestation?
  • A
     Amount of habitat
  • B
     Amount of animal population
  • C
     Amount of biodiversity
  • ✓
    Amount of agricultural land
Answer
Correct option: D.
Amount of agricultural land
Amount of agricultural land
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MCQ 181 Mark
Assertion (A): In zoological parks, the animals are maintained in their natural habitat.
Reason (R): Ex-situ conservation refers to protecting species in their natural habitat.
  • A
    A is correct R is incorrect.
  • B
    A is incorrect R is correct.
  • C
    R explains A.
  • ✓
    Both A and R are incorrect.
Answer
Correct option: D.
Both A and R are incorrect.
 Both A and R are incorrect.
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MCQ 191 Mark
Assertion (A): Prosopis juliflora is native to Afganisthan.
Reason (R): Alien species refers to non-native species.
  • A
    A is correct R is incorrect.
  • ✓
    A is incorrect R is correct.
  • C
    R explains A.
  • D
     Both A and R are incorrect.
Answer
Correct option: B.
A is incorrect R is correct.
 A is incorrect R is correct.
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MCQ 201 Mark
Assertion (A): Social forestry refers to management of forests and afforestation on barren lands.
Reason (R): Afforestation involves the cutting of trees.
  • ✓
    A is correct R is incorrect.
  • B
    A is incorrect R is correct.
  • C
     R explains A.
  • D
    Both A and R are incorrect.
Answer
Correct option: A.
A is correct R is incorrect.
A is correct R is incorrect.
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MCQ 211 Mark
Assertion (A): Ozone acts as a natural sun block.
Reason (R): UV rays reaching the earth are deviated from earth.
  • A
     A is correct R is incorrect.
  • B
    A is incorrect R is correct.
  • ✓
     R explains A.
  • D
    Both A and R are incorrect.
Answer
Correct option: C.
 R explains A.
 R explains A.
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MCQ 221 Mark
Assertion (A): $CO _2$ is a main cause for global warming
Reason (R) : Greenhouse gases trap the radiant heat from sun
  • A
    A is correct R is incorrect.
  • B
    A is incorrect R is correct.
  • ✓
     R explains A.
  • D
    Both A and R are incorrect.
Answer
Correct option: C.
 R explains A.
R explains A.
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MCQ 231 Mark
Which is not a beneficial aspect of Agroforestry?
  • A
    Nutrient cycling is improved
  • B
     Balance in $O _2$ – $CO _2$ composition
  • ✓
    Suitable for wetland where rainfall is maximum
  • D
    Reduces water run-off problem
Answer
Correct option: C.
Suitable for wetland where rainfall is maximum
 Suitable for wetland where rainfall is maximum
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MCQ 241 Mark
Methane is __________ times as effective as $CO _2$ at trapping heat.
  • A
    5
  • B
    10
  • ✓
    20
  • D
    100
Answer
Correct option: C.
20
20
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MCQ 251 Mark
The total ozone layer over the earth surface is __________
  • A
    30 DU
  • ✓
    300 DU
  • C
    3000 DU
  • D
    0.3 DU
Answer
Correct option: B.
300 DU
300 DU
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MCQ 261 Mark
Identify the incorrect statement with regard to Global warming.
  • ✓
    Leads to species enrichment
  • B
    Decreases irrigation
  • C
     Increases vector population
  • D
     Frequent heat waves
Answer
Correct option: A.
Leads to species enrichment
Leads to species enrichment
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