Environmental Science Practice Test | UGC NET Exam

1.The wavelength range of UV-C radiation is
320-400nm
280-320nm
100-1500nmm
240-280nm

2.Lightening in the atmosphere produces
NO
CO
CO2
NH3

3.The principal comeponents of photochemical smog in urban areas are
SO2 and NO2
SPM and CO
SPM and NO2
Hydrocarbons and Ozone

4.Natural gas is composed primarily of
Methane
n-butane
n-octane
A mixture of n-octane and n-butane

5.Which of the following chemical species of mercury is highly toxic to living system?
Mercurous ion
mercuric ion
organo mercurials
atomic mercury

6.Which one of the following is a waste recycling method of solid waste management
composting
Sanitary landfill
Pelletisation
Incineration

7. The acidity of normal rain water is due to
CO2
Cl2
NO2
SO2

8. Pyramid of trophic levels is alwyas upright in case of
Biomass
Number
Energy
All of the above

9.Which one of the following is an endoenzyme in soil
Cellulase
Invertase
Protease
Dehydrogenase

10. Walkley and Black rapid titration method is used for the determination of
Organic carbon content of soil
nitrate content of soil
phosphate content of soil
Fluoride content of soil

Score =
Correct answers:

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