Environmental Issues (NEET) – Online MCQs Test – 5 11

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Online NEET Biology MCQ | NEET MCQ on Environmental Issues (Class 12) | Online MCQ Online Test No. 05

Environmental Issues - Quiz 5

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Question 1
Which one of the following is a wrong statement?
A
Greenhouse effect is a natural phenomenon
B
Eutrophication is a natural phenomenon in freshwater bodies
C
Most of the forests have been lost in tropical areas
D
Ozone in upper part of atmosphere is harmful to animals
Question 2
In an area where DDT had been used extensively, the population of birds declined significantly because
A
Cobras were feeding exclusively on birds
B
Many of the birds eggs laid, did not hatch
C
Birds stopped laying eggs
D
Earthworms in the area got eradicated
Question 3
Measuring Biochemical Oxygen Demand (BOD) is a method used for
A
Measuring the activity of Saccharomyces cerevisiae in producing curd on a commercial scale
B
Working out the efficiency of R.B.Cs. about their capacity to carry oxygen
C
Estimating the amount of organic matter in sewage water
D
Working out the efficiency of oil driven automobile engines
Question 4
dB is a standard abbreviation used for the quantitative expression of
A
The dominant Bacillus in a culture
B
The density of bacteria in a medium
C
A certain pesticide
D
A particular pollutant
Question 5
Identify the correctly matched pair
A
Basal Convention – Biodiversity Conservation
B
Montreal Protocol - Global warming
C
Kyoto protocol – Climatic change
D
Ramsar Convention – Ground water pollution
Question 6
Common indicator organism of water pollution is:
A
Entamoeba histolytica
B
Escherichia coli
C
Eichhornia crassipes
D
Lemna paucicostata
Question 7
Shell of egg in bird becomes thin (not properly formed) due to the pollution of pesticides. This is due to interference in the activity of :
A
Calmodulin
B
Mg ATPase
C
Ca ATPase
D
None of these
Question 8
Lichens can be used as :
A
Source of wood
B
Initial vegetation for waste lands
C
Bio-indicator for water and air pollution
D
To check the air pollution
Question 9
Industrial melanism is an example of
A
Protective resemblance with the surrounding
B
Drug resistance
C
Defensive adaptation of skin against UV radiations
D
Darkening of skin due to industries
Question 10
Carbon dioxide is called green-house gas because it is
A
Transparent to sunlight but traps heat
B
Transparent to heat but traps sunlight
C
Used in green-house to increase plant growth
D
Transparent to both sunlight and heat
Question 11
Trichoderma harzianum has proved a useful microorganism for:
A
Reclamation of wastelands
B
Bioremediation of contaminated soils
C
Biological control of soil-borne plant pathogens
D
Gene transfer in higher plants
Question 12
The two gases making highest relative contribution to the greenhouse gases are
A
CO2 and N2O
B
CO2 and CH4
C
CH4 and N2O
D
CFC5 and N2O
Question 13
The slow rate of decomposition of fallen logs in nature is due to their:
A
Poor nitrogen content
B
Low moisture content
C
Low cellulose content
D
Anaerobic environment around them
Question 14
Which one of the following is not a bioindicator of water pollution?
A
Blood-worms
B
Sludge-worms
C
Sewage fungus
D
Stone flies
Question 15
Which one of the following is the correct percentage of the two (out of the total of 4) green house gases that contribute to the total global warming?
A
CO2 40%,CFCs 30%
B
CFCs 14%, Methane 20%
C
Methane 20%, N2O 18%
D
N2O 6%, CO2 86%
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There are 15 questions to complete.

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11 thoughts on “Environmental Issues (NEET) – Online MCQs Test – 5”

  • Reply ↓
    Mayank

    How poor nitrogen content causes slow rate of decomposition?(asking in reference to ques 13, above)

  • Reply ↓
    prateeksha kumari

    i feel the answer given for q2 is wrong as none of the optios are correct. kindly rechek n let me know,

    • Reply ↓
      Bappaditya Nath

      Q.2: because of high use of DDT, it get accumulated in the birds. And it causes fragile egg shell of birds. And the eggs can’t be hatched.
      It’s called bio-accumulation.

  • Reply ↓
    HAZIQ QAYOOM

    questions you have provided are ncert oriented thanks and please include some physics and chemistry questions as well.