EVS/II/EC/03 Student's Copy
2 0 1 8
CBCS
2nd Semester
ENVIRONMENTAL SCIENCE
Paper EVS-201
Natural Resources
Full Marks 75
Time 3 hours
PART A—OBJECTIVE
Marks 25
The figures in the margin indicate full marks for the questions
SECTION—A
Marks 10
Tick the correct answer in the brackets provided 1×10=10
1. Forest and wildlife are
renewable resources
inexhaustible resources
non-renewable resources
None of the above
2. Examples of mixtures of inorganic and organic resources are
air
soil
water
ores
/321 1 Contd.
3. Dense forest cover in Mizoram is only
138 sq km
248 sq km
124 sq km
340 sq km
4. Because of the lack of seasonal differences due to geographical location
and high-humidity level, vegetation is luxuriant here
Tropical forest
Subtropical forest
Temperate forest
Alpine forest
5. It is a measure of light-transmitting properties
Temperature
Colour
Turbidity
Total solids
6. Above the water table lies the unsaturated zone referred to as
capillary fringe
aquifers
vadose zone
groundwater
7. NLCB stands for
National Landuse Conservation Bureau
National Land Policy and Conservation Bureau
National Landuse and Conservation Board
National Land Policy and Conservation Board
8. Which soil horizon has maximum accumulation of loose and partly
decayed organic matter?
A horizon
B horizon
C horizon
O horizon
EVS/II/EC/03/321 2 Contd.
9. The power generated in windmill
is more in rainy season
depends on the height of the tower
depends on wind velocity
is increased by planting tall trees
10. Tidal energy utilizes
kinetic energy of water
potential energy of water
Both and
None of the above
SECTION—B
Marks 15
Answer/Write short notes on any five of the following, taking one from each Unit
3×5=15
UNIT—I
1. Distinguish between continuous and extrinsic resources.
2. Concept of natural resources
UNIT—II
3. Conservation of forests
4. Recreation function of forests
UNIT—III
5. Earth's water resources
6. Physical characteristics of water
UNIT—IV
7. Soil profile
8. Conservation measures of mineral resources
UNIT—V
9. Concept of conventional and non-conventional sources of energy
10. Geothermal energy
EVS/II/EC/03/321 3 Contd.
PART B—DESCRIPTIVE
Marks 50
The figures in the margin indicate full marks for the questions
UNIT—I
1. Explain in detail exhaustible and inexhaustible resources. 5+5=10
OR
Define natural resources. Give a detailed account of classification and
types of natural resources.
UNIT—II
2. Describe the different forest types in India with their species composition. 10
OR
Write notes on the following 5+5=10
Productive function of forest
Protective and ameliorative functions of forest
UNIT—III
3. Give a detailed account of the consumptive and non-consumptive uses of
water. 10
OR
Write notes on the following 5+5=10
Chemical characteristics of water
Freshwater
UNIT—IV
4. Define soil. Discuss the major types of soil found in India. 2+8=10
OR
Write notes on the following 5+5=10
Landuse pattern in India
Soil erosion
UNIT—V
5. Describe in brief the distribution, formation and types of coal.
OR
Explain the methods of harnessing solar energy and list the advantages
and disadvantages of using solar energy.