Description
Tutor Marked Assignment
ENVIONMENTAL CHEMISTRY
An Application Oriented Course
Course Code: AEC-01
Assignment Code: AEC-01/TMA/2024
Maximum Marks: 100
Note: Answer all the questions given below:
1 a) Describe in brief the two phases of soil genesis. (5)
b) Describe the effects of soil aeration on the metal ions present in it. (5)
2 a) What is meant by soil fertility evaluation? Describe the concepts involved in soil
fertility.
(5)
b) What are the different methods of desalination of brackish water? (5)
3 a) Why the methods of bio monitoring of water quality are more precise and sensitive
than those of chemical analysis?
(5)
b)In agriculture, what will be the adverse effects of using water has high Na+
concentration.
(5)
4 a) Describe the regions of atmosphere based our chemical composition. (5)
b) Explain the air pollution ecosystem. (5)
5 a) Describe the common forms of air pollutants. (5)
b) Discuss the ways of controlling anthropogenic air pollutants. (5)
6 a) Discuss the method of aeration in the treatment of doing wastes. What are the
problems associated with this method?
(5)
b) Describe the effects of pesticides in ecosystem. (5)
7 a) Explain important parameters which are required to be known for proper treatment of
sewage.
(5)
b) Briefly discuss the water associated hazards from ingestion of biological agents (5)
8 a) List the precautions which must be followed during sampling for analysis. (5)
b) Describe the application of ion exchange in treatment of petroleum refinery drainage
water.
(5)
9 a) Describe briefly the principle and working of the glass electrode. How is the pH of
soil measured?
(5)
b) Find the cell constant for a conductance cell in which the conductance, G, of a 0.100
M KCl solution is 0.01178 at 25o
C. The molar conductance for 0.100 M KCl at
25o
C is 128.96 S cm2
mol-1. If a 0.0500 M solution of an electrolyte has a measured
conductance of 0.00824 S using this cell, what is the molar conductance of the
electrolyte?
(5)
10 a) Discuss the basic components of flame photo meter and atomic absorption
spectrometer. Write down the limitations and advantages of both the techniques.
(5)
b) Why coliforms are selected as indicator microorganisms? Discus briefly the
membrane filter tests for their detection in water. What are advantages and
disadvantages of this method over other methods?
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