N A L A N D A O P E N U N I V E R S I T Y
M.Sc. Chemistry, Part-II
PAPER-XVI
(Environmental Chemistry and Analytical Chemistry)
Annual Examination, 2016
Time 3 Hours. Full Marks 80
Answer any FIVE Questions.
All questions carry equal marks.
1. What are the chemical species present in atmosphere What are photochemical reactions
taking place in the atmosphere at different attitude Write equations and condition to explain
you answer.
2. How the polymer and cement industry pollute our environments Explain it.
3. Explain Biogeochemical cycles in environments How do they sustain life in biosphere
4. Write notes on the following
Rf Value Green House Effect
5. How So2 is measured in air How will you estimate the fluoride in the sample of water.
6. Explain D.T.A. Write instructional method for D.T.A. Explain the D.T.A curve of Leonite
NiSo 4 6H 2O .
7. What are heavy metals which pollute drinking water How will you estimate Hg and Cd in the
sample of water.
8. Write the principle of Colorimetry. Derive Lambert-Beer's equations. Write the derivations from
Lambert-Beer law.
9. How is soil polluted by regular addition of pesticides and fertilizers What is effect of these
two on fertility of the soil
10. What 5 TGA technique Write the basic principle of thermo-gravimetric analysis with
examples. Also discuss its principle and application.