1. Air quality standards are based on:
A. Climate and topography
B. Ambiet air quality alone
C. Dose of a pollutant
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D. Method of measurement
2. The unleaded petrol, as an automotive fuel, should not have the lead levels exceeding:
A .0.05 g/L
B. 0.15 g/L
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C. 0.25 g/L
D. 0.50 g/L
3. A major part of air pollution load lies in:
A. Troposphere
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B. Stratosphere
C. Thermosphere
D. Ionosphere
4. Which is the correct order of the degree of weathering of the following rocks?
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A. Dunite > Basalt > Granite > Rhyolite
B. Basalt > Dunite > Granite > Rhyolite
C. Granite > Basalt > Dunite > Rhyolite
D. Rhyolite > Granite > Dunite > Basalt
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5. Interior of the earth is inferred through:
A. Deep continental drilling
B. Deep ocean drilling
C. Seismic soundings
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D. Heat flow measurements
6. The minimum thickness to be used in biodegradable carry bags should be:
A. 5 microns
B. 10 microns
C. 15 microns
D. 20 microns
7. The criteria indicators of water pollution are:
A. pH, COD, BOD, DO
B. pH, Coliform, COD, DO
C. Chloroform form, COD, BOD
D. BOD, DO, Chloroform
8. The cation exchange capacity of silty loams is:
A. 0 – 1
B. 1 – 5
C. 5 – 15
D. 15 – 30
10. The state having the largest forest cover in India is:
A. Andhra Pradesh
B. Orissa
C. Maharashtra
D. Chattisgarh
11. Coal mine workers are prone to victims of one of the following diseases:
A. Pneumoconiosis
B. Byssinosis
C. Asbestosis
D. Silicosis
12. The number of oxygen molecules required for the complete combustion of 1 molecule off propane is:
A. 2
B. 3
C. 4
D. 5
13. Which one of the following is necessary for the growth and maintenance of animal bones and teeth?
A. Hydrogen
B. Oxygen
C. Phosphates
D. Sulphur
14. Which of the following organisms are used as components of biofertilisers?
A. Blue green algae only
B. Coliforms bacteria and mushrooms
C. N-fixing bacteria only
D. Blue green algae and N-fixing bacteria
16. Assertion (A): CFCs destroy ozone molecules in stratosphere
Reason (R): CFCs have very high global warming potential
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; (R) is false
D. (A) is false; (R) is true
17. Match the Lists I and II. Select the correct answer using the code given below the lists:
(a) Environmental Protection Act (i) 1991
(b) Air (Prevention and Control (ii) 1974 of Pollution) Act
(c) Water (Prevention and (iii) 1981 Control of Pollution) Act
(d) Public Liability Insurance Act (iv) 1986 Code:
(a) (b) (c) (d)
A. (i) (ii) (iv) (iii)
B. (iv) (iii) (ii) (i)
C. (ii) (iv) (i) (iii)
D. (iii) (i) (ii) (iv)
19. 1 kW-hour of energy is equivalent to:
A. 460Kcal
B. 1250 KCal
C. 860 Kcal
D. 760 KCal
20. The dominant gas in biogas is:
A. CH4
B. C2H5
C. C02
D. NO2
21. Match the following lists I and II and select the correct answer using the code given below the lists:
(a) Fluvial (i) Moraines
(b) Shallow Marine (ii) Loess
(c) Glacial (iii) Oxbow lake
(d) Eolian (iv) Spits and Bar
Code:
(a) (b) (c) (d)
A. (iii) (iv) (i) (ii)
B. (i) (ii) (iii) (iv)
C. (iv) (iii) (ii) (i)
D. (iii) (iv) (ii) (i)
22. Which of the following pairs is not correctly matched?
A. Tropical zone – Hot, winterless
B. Sub-tropical zone – Hot with cool winter
C. Temperate zone – Warm summer with pronounced winter
D. Alpine zone – Long summer with short severe winter
23. The hydraulic conductivity or the coefficient of permeability of which of the following media is the highest:
A.Clay
B. Sand
C. Gravel
D. Sandstone
24. Aquatic organisms are very sensitive to:
A. Salinity
B. pH
C. Temperature
D. Dissolved oxygen
25. Which of the following acts as a trigger for a landslide to occur?
A. Vegetation loss
B. Rainfall
C. Animal movement
D. Vehicular movement
26. After sodium chloride, which of the following compounds has the maximum concentration ii sea water?
A. Magnesium sulphate
B. Calcium sulphate
C. Magnesium chloride
D. Potassium sulphate
27. The directions for the regulation, prohibit or the closure of any industry are given b
A. State government
B. Central government
C. State Pollution Control Board
D. Central Pollution Control Board
29. Which of the following sets has the maximum dispersion?
A. 10, 11, 12, 10, 11, 10, 10, 11, 10, 11
B. 1, 2, 1, 2, 1, 2, 1, 2, 1, 2
C. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
D. 5, 5, 6, 6, 5, 5, 6, 5, 6, 5
30. Which of the following methods is suitable for hypothesis testing?
A. Two way analysis of variance
B. t-test
C. Cluster Analysis
D. Correlation and regression
31. Box model is mainly employed for analysing the:
A. Dispersal of atmospheric pollutants
B. Predictor and Prey populations
C. Birth and death rates
D. Discharge of a waste into groundwater
32. The geometric mean of 2, 2, 3 and 3 is:
A. 6
B. 76
C. 5
D. 1.6
34. Imhoff tank is used for:
A. Filtration and Flocculation
B. Sludge digestion and sedimentation
C. Demineralization
D. Distillation
35. A solar cell is basically a:
A. p type semiconductor
B. n type semiconductor
C. p-n diode
D. p-n-p transistor
36. The information system useful to identify the location of a point is:
A. CIS
B. GPS
C. Clinometers
D. Compass
37. The global warming potential of N20 relative to C02 is:
A. 25
B. 10,000
C. 0.5
D. 230
38. The size distribution of aerosols in ambient urban environment tends to follow:
A. Normal distribution
B. Exponential distribution
C. Judge’s distribution
D. Poisson distribution
40. Landfill sites can be permitted in:
A. wetlands
B. flood plains
C. habitats of endangered species and recharge zones for local drinking water supplies
D. abandoned mines with impermeable barrier at the bottom with a leach ate recycling system
41. The satellite which has been put into orbit recently capable of producing high resolution thematic data is:
A. IRS-2D
B. EDUSAT
C. RESOURCESAT
D. LANDSAT
42. The atmosphere is chemically homogenous upto an altitude of:
A. 10km
B. 30km
C. 50km
D. 80km
43. At which stage of an ecological succession, an ecosystem exhibits total photosynthesis equal to respiration?
A. Pioneer
B. Climax
C. Virgin
D. Mid-seral
44. When in a community a species has the same abundance and density, the frequency of the species shall be:
A. 20%
B. 50%
C. 90%
D. 100%
45. For determination of primary productivity in a lake, which is the most appropriate time for sampling?
A. 5 AM
B. 8 AM
C. 12 Noon
D. 3 PM
46. Which is the best and simple method to determination of fluorine in ground water?
A. Atomic Absorption spectrometry
B. Spectrophotometer
C. Flame photometry
D. Ion-selective electrode
Read the passage below and answer questions that follow based on your understanding of the passage:
Forests in India are fast disappearing at a rate of about 0.6% per year equivalent to about 7.3 million ha. This renders all the closed tropical forests disappear within 177 years, at this rate of destruction of tropical forests, about 20-25% of the world’s plant species would have been lost by the year 2000.
By another estimate 90% of tropical forest area containing about 505 varieties of world plant species will be destroyed during the next 20 years. By another estimate 1000 species/year would become extinct. This figure is expected to rise to 10,000 species/year. During the next 20 years, about one million species are likely to disappear.
Loss of biodiversity is severe in agricultural ecosystems too. During green revolution, thousands of wild crop varieties were replaced with a few hybrid species. This resulted in slight disappearance of genetic resources of crop plants, especially of wheat and rice.
With the disappearance of the plants, the associated microorganisms and fauna were also lost. Further indiscriminate use of fertilizers and insecticides reduced the microbial species diversity live stock populations are already homogenized and their diversity is extinct.
Much of the fragile breeding and feeding grounds of almost 2/3rd of the world’s oceanic fish have been destroyed. Endangered marine life in India lists about 8 species of marine mammals, 5 species of marine turtles, 1 species of hemichordate, 3 species of cephalochordate, 10 species of crab etc.
Major cause of loss of biodiversity is the expansion of agricultural practices. Biological diversity is replaced by biological uniformity or monoculture in the name of green revolution in agriculture, white revolution in dairying and blue revolution in fisheries. The purpose of all these revolutions is to ensure food security and prevent “hunger disaster”.
Biodiversity is also lost due to reclamation for building dams, factories highways, mining operations etc. in the forested regions. Illegal trade and poaching of wild life also damaged biodiversity. Thus, biodiversity is destroyed by anthropogenic activities.
47. Loss of biodiversity is primarily due to:
A. Green revolution
B. White revolution
C. Blue revolution
D. Mining Activity
48. Decrease in India’s forest cover is attributed mainly to:
A. Urbanization and Industrialisation
B. Agriculture and Dairying
C. Rail and Road Construction
D. Mining and Power Plants
49. About 90% of tropical forest area containing ______ varieties of world’s plant species in the next twenty years.
A. 7.3 million
B. 505
C. 10,000
D. 1000
50. The reduction of microbial species is due to:
A. Mining operations
B. Application of chemical fertilizers
C. Loss of wildlife
D. Construction of highways.
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