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Free download in PDF Environmental Issues Multiple Choice Questions (MCQs) and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like NEET, AIIMS, JIPMER etc. These short solved questions or quizzes are provided by Gkseries./p>
(1)
What is the cause of decrease in the population of birds in an aquatic food chain
[A]
Due to DDT
[B]
Due to 2,4D
[C]
Due to CFCs
[D]
Due to ABA
(2)
Which of the following is the Terror of Bengal
[A]
Banyan tree
[B]
Water Hyacinth
[C]
Hydrilla
[D]
Vallisneria
(3)
Which of the following is the dominant among greenhouse gases
[A]
Methane
[B]
CFCs
[C]
Oxides of nitrogen
[D]
Carbon dioxide
(4)
What are the effects of UB-B radiations on human beings
[A]
Ageing of skin
[B]
Skin cancers
[C]
Snow-blindness
[D]
All the options
(5)
Name the problems associated with Green Revolution.
[A]
Waterlogging
[B]
Soil salinity
[C]
Both a and b
[D]
None
(6)
Which of the compounds are responsible for accelerated eutrophication
[A]
Sulphates
[B]
Nitrates
[C]
Phosphates
[D]
Both b and c
(7)
FOAM is associated with
[A]
STDs
[B]
STP
[C]
MTP
[D]
MOET
(8)
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
Answer: Greenhouse effect is a natural phenomenon
(9)
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
Answer: Many of the birds eggs laid, did not hatch
(10)
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
Answer: Estimating the amount of organic matter in sewage water
(11)
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
Answer: A particular pollutant
(12)
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
Answer: Kyoto protocol – Climatic change
(13)
Common indicator organism of water pollution is:
[A]
Entamoeba histolytica
[B]
Escherichia coli
[C]
Eichhornia crassipes
[D]
Lemna paucicostata
(14)
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 the above
(15)
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
Answer: To check the air pollution
(16)
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
Answer: Darkening of skin due to industries
(17)
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
Answer: Used in green-house to increase plant growth
(18)
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
Answer: Biological control of soil-borne plant pathogens
(19)
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
(20)
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
Answer: Low cellulose content
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