GEOL/VI/12 Student's Copy
2 0 1 8
6th Semester
GEOLOGY
TWELFTH PAPER
Environmental Geology
Full Marks 55
Time 2½ Hours
PART A—OBJECTIVE
Marks 20
The figures in the margin indicate full marks for the questions
SECTION—A
Marks 5
Tick the correct answer in the brackets provided 1×5=5
1. Three quarters of the atmosphere's mass resides within the
stratosphere
mesosphere
troposphere
ionosphere
/523 1 Contd.
2. Surface waves are different from S waves in a sense they are
slow
less destructive
harmless
steady
3. The atmosphere is mainly heated by the
short-wave solar radiation
long-wave terrestrial radiation
reflected solar radiation
scattered solar radiation
4. Which of the following is the most harmful cause of oceanic water
pollution?
Plastic waste
Industrial effluence
Soil pollution
Oil spill
5. Which of the following is mainly responsible for the degradation of soil?
Chemical fertilizers
Landslides
Floods
All of the above
GEOL/VI/12 2 Contd.
SECTION—B
Marks 15
Write short notes on the following 3×5=15
1. Extend of biosphere
2. Causes of flood
3. El Niño
4. Types of industrial waste
5. Causes of urbanization
PART B—DESCRIPTIVE
Marks 35
The figures in the margin indicate full marks for the questions
Answer five questions, taking one from each Unit
UNIT—I
1. Write short notes on the following 3½+3½=7
Hydrosphere
Weather forecasting
2. What is paleoclimatology? Discuss different techniques employed for
reconstruction of paleoclimate.
UNIT—II
3. How are the volcanoes formed? Write a note on various types of volcanoes.

4. Discuss major issues involved in disaster preparedness. 7
GEOL/VI/12 3 Contd.
UNIT—III
5. Give an account of heat budget of the planet earth. 7
6. Describe the origin and mechanism of Indian monsoons.
UNIT—IV
7. What are different types of environmental pollution? Write notes on the
sources, effects and control measures of air pollution.
8. Discuss the impact of industrialization on the environment. 7
UNIT—V
9. What are various types of environmental hazards? Discuss the effects of
geoenvironmental hazards in Mizoram.
10. Write short notes on the following 3½+3½=7
Impact of land degradation
Causes of landslides