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

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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

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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

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(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

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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. C2F3C13 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. U2

C. U3

D. U1/2

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