EVSC/VI/10 Student's Copy
2 0 1 8
6th Semester
ENVIRONMENTAL SCIENCE
TENTH PAPER (EVS-602)
Techniques in Environmental Analysis
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. Which data are generally one-dimensional and independent?
Spatial data
Non-spatial data
Primary data
Secondary data
/530 1 Contd.
2. The mode of the data 12, 17, 16, 14, 13, 16, 11, 14, 10, 9 is
13
11
14
14 and 16
3. The statistical device with the help of which the unknown values of a
variable from the known values of another correlated variable is estimated
is called
correlation
regression
F-test
T-test
4. Which of the following is correct regarding remote sensing?
The interaction of the electromagnetic radiation with the
target
The emission of the electromagnetic radiation from the
target
Both and
Neither nor
5. Through which device the main components of the computer communicate
with each other?
Keyboard
System bus
Monitor
Memory
EVSC/VI/10/530 2 Contd.
SECTION—B
Marks 15
Answer/Write short notes on the following 3×5=15
1. Distinguish between spatial and non-spatial data.
2. The following table gives the marks obtained by a batch of 21 students in
the IV Semester Examination in Environmental Science
Roll No. 1 2 3 4 5 6 7 8 9 10
Marks (in EVS) 29 65 33 45 51 72 48 33 42 25
Roll No. 11 12 13 14 15 16 17 18 19 20 21
Marks (in EVS) 28 35 65 47 60 30 32 52 54 56 58
Calculate the median mark.
3. Types of correlation
4. Working principle of GPS
5. Difference between computer hardware and software
PART B—DESCRIPTIVE
Marks 35
The figures in the margin indicate full marks for the questions
UNIT—I
1. What do you mean by sampling? Describe the major steps in a sample
survey.
OR
Give detailed accounts on the following 3½+3½=7
Primary data
Secondary data
UNIT—II
2. Give detailed accounts on the following giving suitable examples 3½+3½=7
Line chart
Pie chart
EVSC/VI/10/530 3 Contd.
OR
Calculate the mean from the following data 7
Marks Students
0-10 33
10-20 53
20-30 108
30-40 221
40-50 153
50-60 322
60-70 439
70-80 526
80-90 495
90-100 50
UNIT—III
3. What is the significance of the measures of dispersion? Describe the
different types of measures of dispersion.
OR
Give detailed accounts on the following 3½+3½=7
Analysis of variance
Chi-square test
UNIT—IV
4. Define remote sensing. Describe the different types of sensors used in
remote sensing.
OR
Describe the application of remote sensing and GIS in environmental
science. 7
UNIT—V
5. Describe in detail the functional units of a computer. 7
OR
Give detailed accounts on the following 3½+3½=7
Statistical software—SPSS
MS-Excel