Practice Test on Environmental Chemistry | Environmental Science Quiz

1.Identify the environment system with lowest entropy
Land in monoculture agriculture sustained by high energy input
coal reduced to CO2
Polluted rivers
Soil containing a balanced community of living organisms

2.Which method is used to separate proteins on the basis of their sizes?
Ion exchange chromatography
Thin layer chromatography
Gel Filtration Chromatography
Adsorption Chromatography

3.Which among following is short lived species in the atmosphere?
CH4
CO
N2O
OH radical

4.The nightime troposperic chemistry is dominated by which of the following chemical species?
Nitrate ions
Ozone molecules
Nitrate radicals
Hydroxyl radical

5.Which of the following chemical oragnic species is/are insoluble in acid or alkali?
Humin
Humic acid
Fulvic acid
Both humic acid and humin

6.Toxicity of which of the following metals is not due to reaction with sulfhydryl group?
Arsenic
Lead
Cadmium
Chromium

7.Among the following, which one is the most hazardous chemical in the atmosphere?
Dioxin
Carbon monoxide
Halons
Carbon monoxide

8. Which of the following is a major photochemical oxidant?
PAN
Ozone
Aldehydes
Peroxybenzoyl nitrate

9.Under aerobic biodegration of DDT, which of the following compound is formed?
DDD
DDN
DDE
DDS

10. Chemically phytochelatins are
proteins
lipids
polysaccharides
Polypeptides

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