Environmental science multiple choice question /answers:
1. Identify the correct
chronological sequence (oldest to
youngest) in the order of their
formation:
A. Pacific ocean > Atlantic Ocean >
Mediterranean Sea > Indian Ocean
B. Pacific ocean > Atlantic Ocean >
Indian Ocean > Mediterranean Sea
C. Atlantic ocean > Pacific Ocean >
Indian Ocean > Mediterranean Sea
D. Atlantic ocean > Pacific Ocean >
Mediterranean Sea > Indian Ocean
2. Movement of individual rock
masses along structural planes such
as bedding, joints and faults on a
slope is known as:
A. debris slide
B. slump
C. rock slide
D. soil creep
3. Make list I and list II and select
the correct answer using codes
given below the lists:
List I List II
(a) Mid oceanic ridge (i) Alkali rich
basalt
(b) Rift valley (ii) Potash poor
basalt
(c) Island arc (iii) Andesite
(d) Continent (iv) Plateau basalt
Code:
(a) (b) (c) (d)
A (ii) (i) (iv) (iii)
B. (ii) (i) (iii) (iv)
C. (i) (ii) (iii) (iv)
D. (i) (ii) (iv) (iii)
4. Consider the following about the
Himalayan orogeny:
(a) The orogeny resulted from the
southward movement
(b) The orogeny began about 25
million years ago
(c) The orogeny closed about 1
million years ago
(d) The Himalayas have a root of
relatively light crustal rocks
projecting into the denser mantle.
Which of the following
combinations is correct?
A (a) and (b)
B. (c) and (d)
C. (a) and (c)
D. (b) and (d)
5. A seismogram records the
following types of earthquake
waves.
(a) L - waves
(b) P - waves
(c) S - waves
The correct chronological sequence
of the arrival of these waves is :
A. (b), (c) and (a)
B. (b), (a) and (c)
C. (c), (a) and (b)
D. (a), (b) and (c) arrive at the
same time
6. Which one of the following
statement is true of braided
streams?
A Width of the channel is less than
its depth
B. Width and depth of the channel
are equal
C. Width of the channel is greater
than its depth
D. Width of the channel is
unrelated to its depth
7. In which of the following
frequency ranges the human ear is
most sensitive to noise:
A. 1 - 2 KHz
B. 100 - 500 Hz
C. 10 - 12 KHz
D. 13 - 16 KHz
9. Assertion (A): Aerosols have
potential for modifying the climate.
Reason (R): Aerosols interact with
both short wave and infra - red
radiations.
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 and (R) is false
D. (A) is false but (R) is true
10. Which of the following grows
rapidly resulting in the shrinkage of
water bodies?
A. Phytoplankton
B. Zooplankton
C. Algae
D. Macrophytes
11. Which species of chromium is
toxic in water?
A .Cr+ 2
B. Cr+ 3
C. Cr+6
D. Cr°
12. Chemical compounds having
same crystal structure are called:
A. Polymorphic
B. Pseudomorphic
C. Isomorphic
D. None of the above
13. Micas having an atomic
structure defined as continuous
sheets of tetrahedrons, sharing 3-
oxygen atoms, are called:
A. Inosilicate
B. Phyllosilicate
C. Tectosilicate
D. Sorosilicate
15. If the population growth
follows a logistic curve, the
maximum sustainable yield:
A. is equal to half the carrying
capacity
B. is equal to the carrying capacity
C. depends on growth rate
D. depends on the initial
population
16. Fluidized - bed combustion of
coal is an efficient method of
controlling which of the following
air pollutants:
A. CO
B. SPM and NOx
C. NOx and SOx
D. CO, SPM and SOx
17. The plume rise in a coal based
thermal power plant depends on:
(a) Buoyancy
(b) Atmospheric stability
(c) Momentum of exhaust gases
Identify the correct combination
A. (a) and (b) only
B. (b) and (c) only
C. (a) and (c) only
D. (a), (b) and (c)
18. The efficiency of a solar flat
plate collector depends on:
(a) Thermal efficiency
(b) Optical efficiency
(c) Solar flux
Identify the correct combination
A. (a), (b) and (c)
B. (a) and (b) only
C. (b) and (c) only
D. (a) and (c) only
19. An increase of 10 ppm in the
concentration of CO, in atmosphere
represents approximately an
addition of carbon of amount:
A. 1.2 Kilotons
B. 2.12 Megatons
C. 21.2 Geiga tons
D. 2120 tons
20. Winds blowing down an incline
often due to cold air drainage are
called:
A. Anabatic winds
B. Mountain winds
C. Cyclonic winds
D. Katabatic winds
21. Mixing height is:
A. the height of ground based
inversion
B. the height at which geostrophic
balance occurs
C. the height of constant solar flux
layer
D. the height upto which
atmosphere is churned by
convection
22. For a comprehensive EIA study,
it is to be conducted for:
A. The whole year
B. Any three seasons including
monsoon
C. Three seasons excluding
monsoon
D. The worst season
24. In initial environmental
examination, the following are
considered:
A. No quantitative data
B. Primary data
C. Secondary data
D. On site data for at least a
season
25. Which of the following forest
types is most widespread in India?
A. Tropical evergreen forest
B. Tropical deciduous forest
C. Temperate forest
D. Scrub forest
26. The presence of
pneumatophores is seen in:
A. Desert plants
B. Climbers and lianas
C. Trees of tropical moist forests
D. Mangroves
27. Ramsar convention is related to
conservation of:
A. Tiger
B. Elephants
C. Crop genetic diversity
D. Wetlands
28. A significant effect of climate
change on account of global
warming on terrestrial plants will
be on:
A. Stomatal mechanism
B. Amino acid composition of
cereal grains
C. Phenology
D. Bark formation in trees
29. A tree, which is popular in
social forestry programme in India,
is:
A. Shorea robusta
B. Ailanthus excelsa
C. Cedrus deodara
D. Callistemon lanceolatus
30. The great Indian Rhino has its
natural home in:
A. Kaziranga National Park
B. Corbett National Park
C. Sunderbans
D. Kanha National Park
31. According to the Botanical
Survey of India, the total number
of plant species in India is about:
A. 45,000
B. 75,000
C. 17,000
D. 30,000
32. Assertion (A): Bt cotton is a
transgenic crop which has been
introduced iri India, but is being
opposed on environmental
grounds. Reason (R): CrylAc protein
in Bt cotton has been found to be
toxic and allergenic to human
beings.
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 correct explanation of (A).
C. (A) is true but (R) is false
D. (A) is false but (R) is true
33. Oxygen toxicity (in humans) is
caused by:
A. Inhalation of molecular oxygen
B. Generation of free radicals
C. Interactions of singlet oxygen
with membrane
D. None of the above
34. C 2F 3 C1 3 gas:
A. absorbs ultraviolet radiations
B. affects troposphere ozone
C. forms aerosols in stratosphere
D. absorbs infrared radiations
35. Which of the following shows
bioaccumulation and contaminate
food chains?
A. Pesticides
B. Polychlorinated biphenyls
C. PAN
D. All of the above
36. Removal of which of the
following impurities from
contaminated water requires the of
coagulants:
A. Colloidal impurities
B. dissolved solids
C. micro organisms
D. all of the above
38. The most efficient method of
biodegradable urban solid waste
management is:
A. Landfills
B. Pelletisation
C. Gasification
D. Composting
39. Pollutants in soil can be broken
down by micro organisms. The
process is called:
A. Probiotics
B. Bioremediation
C. Bioaugmentation
D. None of the above
40. A thermodynamic function of
state which is constant during a
reversible isobaric isothermal
process is:
A. Geothermal potential
B. Thermodynamic efficiency
C. Enthalpy
D. Gibb's free energy
41. t - statistic is useful for testing:
A. Variances
B. Overall goodness of fit of a
regression model
C. null hypothesis for a regression
coefficient
D. constancy of the mean
43. 1 metric ton of average coal in
energy terms is equivalent to:
A. 2000 cubic feet of natural gas
B. 24000 cubic feet of natural gas
C. 1.5 barrels of oil
D. 2.0 barrels of oil
45. In marine environment
Carbonate Compensation Depth
(CCD) is defined as depth at which:
A. Carbonate begins to dissolve
B. Carbonate begins to precipitate
C. Carbonate begins to precipitate
D. Bicarbonate begins to dissolve
46. In an idealised Magneto
hydrodynamic power plant, the
maximum power output varies with
fuel velocity (u) as:
A. U
B. U 2
C. U 3
D. U 1/2
48. In humid climate, weathering
of various types "of rocks occurs.
Identify the correct sequence
in order of decreasing weathering:
A. Basalt > Dunite > Granite
B. Basalt > Granite > Dunite
C. Dunite > Granite > Basalt
D. Dunite > Basalt > Granite
49. Match list I and list II and
select the correct answer using
codes given below the lists
List I List II
(a) Ozone depletion (i) Basel
convention
(b) CO-, reduction (ii) Kyoto
Protocol
(c) Sustainable development (iii) Rio
Summit lopment
(d) Hazardous waste (iv) Montreal
Protocol Code:
(a) (b) (c) (d)
A. (i) (iv) (iii) (ii)
B. (iv) (ii) (iii) (i)
C. (ii) (iii) (iv) (i)
D. (iv) (iii) (ii) (i)
50. The lion - tailed macaque is
endemic to:
A. Andaman and Nicobar islands
B. Lakshadweep
C. Nilgiri
D. Arunachal Pradesh
Answers
1 2 3 4 5 6 7 9 10
A C B D A C B B A
11 12 13 15 16 17 18 19 20
B C D A D D D B B
21 22 24 25 26 27 28 29 30
C A B B C D A A A
31 32 33 34 35 36 38 39 40
A A B B D B D B D
41 43 45 46 48 49 50
B D A C A B A
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