West Bengal Primary Teachers Eligibility Test: Environmental science multiple choice questions/answers (Set-1)

Environmental science study materials:
1. Which of the following
statement about Fjord is incorrect?
A. Most Fjords were formed due to
raise in sea level after the melting
of Pleistocene ice
B. It is an emergent coast that was
originally submerged
C. It is a long narrow inlet of the
sea bound by steep slopes
D. It is a glaciated valley that has
been inundated by the sea

3. Residence time of water
molecule in the ocean is:
A. 3.5 years
B. 3.5 million years
C. 35 years
D. 35000 years

4. Hyperplasia means:
A. excessive motility of a muscle
B. Voracious eating
C. Abnormal increase in number of
cells
D. An increase in size of a cell

5. Carbon dioxide absorbs radiation
in the range:
A. 5.5 and 7 microns
B. Greater than 27 microns
C. 8 to 13 microns
D. 0.1 to 30 microns

6. Sodium is usually estimated by
which of the following analytical
technique:
A. Flame Photometry
B. Coulometry
C. High pressure liquid
chromotography
D. Visible spectrophotometry

7. Which combination of the
following elements constitutes a
major portion of earth crust:
A. Oxygen and Silicon
B. Oxygen and Iron
C. Silicon and Iron
D. Aluminium and Iron

8. Assertion (A):
Chlorofluorocarbons deplete ozone.
Reason (R): These compounds
contain Chlorine, Bromine and
Fluorine.
A. Both (A) and (R) are true and (R)
is the correct explanation of (A)
B. Both (A) and (R) are true but (R)
is not the correct explanation of
(A)
C. (A) is true but (R) is false
D. (A) is false but (R) is true

10. Maximum Density of water is
at:
A. 4°C
B. 0°C
C. 100°C
D. 272°C

11. The cause of lung cancer
Mesothalemia is:
A. Asbestos
B. Arsenic
C. Mercury
D. Chromium

12. Which of the following pattern
of evolution accounts for all the
diversity present on earth today?
A .Microevolution
B. Megaevolution
C. Biodiversity
D. Speciation

13. Group of individuals of the
same species that share common
attributes are called:
A. Community
B. Population
C. Ecotype
D. Society

14. Which one of the following is
the correct food chain?
A. Algae -> Daphnia -> Dragon Fly
Nymph -» Newt -» Grass Snake
B. Daphnia -» Dragon Fly Nymph ->
Newt -» Algae -> Grass Snake
C. Grass Snake -> Newt -» Dragon
Fly Nymph Daphnia Algae
D. Newt -» Grass Snake -» Dragon
Fly Nymph -» Algae -> Daphnia

16 . Assertion (A): Monsoonal
rainfall is very high both on the
west coast and northeast India.
Reason (R): The duration of
monsoon over west coast and
northeast India is longer than
other parts of India.
A Both (A) and (R) are true and (R)
is the correct explanation of (A)
B. Both (A) and (R) are true but (R)
is not the correct explanation of
(A)
C. (A) is true but (R) is false
D. (A) is false but (R) is true

19. Which one of the following
statements regarding El-NINO is
NOT true?
A. It is an extension of equatorial
current towards the western coast
of South America.
B. It is an occasional warm current
leading to an increase of about
10°C in subsurface water
temperature.
C. It develops as temporary
replacement of usual cold Peruvian
Current.
D. It causes an increase in plankton
thriving in cold Peruvian current.

20. The process of alluviation
indicates:
A .Removal of particles from the
upper layer of soil
B. Removal of particles from lower
layer of soil
C. Deposition of soil particles in
sub-soil layer
D. Transportation of soil particles
in the B-horizon

21. Which one of the following is
the cleanest source of energy?
A. Hydropower
B. Fossil fuel
C. Nuclear power
D. Wind energy

22. Match the items in List - I with
List - II and select the correct
answer using codes given below:
List I List - II
(a) CFC (i) Bhopal Gas Tragedy
(b) C0 2 (ii) Global Warming
(c) BOD (iii) Ozone depletion
(d) MIC (iv) Water pollution Code:
(a) (b) (c) (d)
A. (iii) (ii) (iv) (i)
B. (iv) (iii) (i) (ii)
C. (i) (ii) (iii) (iv)
D. (iv) (iii) (ii) (i)

23. The global warming efficiency
of a CFC molecule in relation to a
CO-, molecule is higher by a factor
of:
A. 125
B. 25
C. 20,000
D. 1500

24. Arsenic problem in India is
primarily due to:
A. Overexploitation of arsenopyrite
in the hinterland
B. Overexploitation of coal in Bihar
and Bengal
C. Overexploitation of ground
water in the affected areas
D. Overexploitation of surface
water in the affected areas

25. Acid rain is caused by:
A. CO and CO2 ,
B. SO 2 ,and 0 2
C. S0 2 and NO" 2
D. NO 2 and O 2

26. What will be the outcome of
Eutrophication of surface waters?
A. Overproduction of biomass
B. Decrease in nitrogen
concentration
C. Decrease in phosphorus
concentration
D. Decrease in both nitrogen and
phosphorus concentrations.

27. Assertion (A): Negatively
charged soil particles attract
positive ions like Ca++ and Mg ++
Reason (R): The attraction keeps the
ions at soil level for ready
availability.
A. Both (A) and (R) are true and (R)
is the correct explanation of (A)
B. Both (A) and (R) are true but (R)
is not the correct explanation of
(A)
C. (A) is true but (R) is false
D. (A) is false but (R) is true

29. Cost Benefit analysis is
required in case of proposals
involving clearance of forest land:
A. Greater than 1Oha but less than
20ha
B. Greater than 20ha
C. Greater than 5ha but less than
1Oha
D. Greater than 40ha only

30. Ecologically sensitive and
important areas, breeding and
spawning grounds of marine life
etc., are categorized in coastal
Regulation Zone as:
A. CRZ - IV
B. CRZ - II
C. CRZ - III
D. CRZ - I

31. A management tool comprising
a systematic, periodic and objective
evaluation of how well an
environmental organization,
management and equipment are
performing is known as:
A. Raw material balance
B. Input - output analysis
C. Acturities at site
D. Environmental audit

33. Match the items in List - I with
List - II and select the correct
answer using codes given below:
List - I List - II
• (a) Montreal Conven- (i) Ozone
depletion tion
(b) Rio - Summit (ii) Greenhouse
gas
(c) Ramsah Conven- (iii) Convention
on tion Biological diversity
(d) Kyoto Protocol (iv) Wetlands
convention
Code:
(a) (b) (c) (d)
A. (iii) (ii) (i) (iv)
B. (iv) (iii) (i) (ii)
C. (i) (iii) (iv) (ii)
D. (i) (ii) (iv) (iii)

34. The least preferred technique
in the disposal of municipal solid
waste is:
A. incineration
B. composting
C. land filling
D. bricketting

35. Bacterial decomposition of
biological material under aerobic
condition is:
A. Fermentation
B. Fertilization
C. Contamination
D. Composting

36. When you go for shopping,
what are you expected to do to
save environment?
A. Shop for products that have as
little packaging as possible.
B. In any store, use a bag even it is
not needed.
C. Do not reduce the frequency of
shopping.
D. Buy paper towels and napkins.

38. In the analysis of 15 water
samples, Ca and Mg gave a
correlation of +0.95. It means:
A. Ca came from soil and Mg came
from biota
B. Ca and Mg both came from the
same type of water
C. Ca and Mg are both cogenetic
D. Ca and Mg came from different
sources.

39. If a piece of metal weighs
10.2g in air, 8.6g in water and
7.8g in another liquid, then what
will be the specific gravity of the
liquid?
A. 1.0
B. 1.5
C. 2.0
D. 3.0

40. The geometric mean of the
numbers 2, 4, 8, 16, 32 is:
A. 12
B. 16
C. 8
D. 32

41. The correlation coefficient
between the variables X, Y as given
in the following table:
X 1 3 4 6 8 9 11 14
Y 1 2 4 4 5 7 8 9 is:
A. -0.977
B. -0.517
C. +0.977
D. +0.217

42. Climatic stress is caused by
insufficient and/or excessive
regime of:
A. Temperature
B. Humidity
C. Solar radiation
D. All the above

43. The chemical that is used to
ripen mangoes is:
A .Calcium sulphide
B. Calcium carbide
C. Calcium carbonate
D. Calcium chloride
44. Which two of the following
statements regarding ISO 14000
series of standards are true?
Answer choosing the code given
below:
(i) ISO 14000 standards are based
on a principle assumption that
better environmental management
will lead to better environmental
performance.
(ii) ISO M°C/u standards are
regulatory standards developed by
ISO
(iii) ISO 14000 standards are
market driven and therefore are
based on voluntary involvement of
all interests in the market place.
(iv) The adoption of ISO 14000 is a
one time commitment
A (i) and (ii)
B. (ii) and (iii)
C. (i) and (iii)
D. (iii) and (iv)

45. Organisms that generate energy
using light are:
A. oligotrophs
B. chaemorganotrophs
C. chaemolithotrophs
D. photoautotrophs

47. Land use pattern is usually
studied by the following technique:
A. Aerial photography
B. Satellite imaging
C. Satellite imaging and G. I. S.
D. Satellite imaging, G. I. S. and G.
P. S.

48. To conserve coral reefs the
Govt, of India declared one of the
following as Marine Park:
A. Gulf of Kutch
B. Lakshadweep islands
C. Gulf of Mannar
D. Andaman Islands

49. Which one of the following
does not contribute to
conservation of water?
A Waste water treatment
B. Waste land development
C. Water shed protection
D. Rain water harvesting

50. Particle size in soil can be
classified as clay: 1-4 micron. Silt:
4-62 micron. Sand: 62-1000
micron; Boulder: >1000 micron. It
is hence correct to suggest that in
nature particle size distribution
follows:
A. Binomial distribution
B. Lognormal distribution
C. Linear distribution
D. Normal distribution
Answers
1   3  4   5   6   7   8   10
D  C  C  A   A   A   C   A
11 12 13 14 16 19 20
B    C    C   A  B   A  C
21 22 23 24 25 26 27 29 30
D    A   A   C   C   A   A   A   D
31 33 34 35 36 38 39 40
D    C   D   A   A   D   C  C
41 42 43 44 45 47 48 49 50
C    D    B  A   D   B   B   B  D