CBSE
For a clean environment, which one following is not essential?
Producer
Consumer
Decomposer
Polluter
Freon gas causing stratospheric O3 depletion is mainly released from
refrigerator
automobile
thermal power plant
steel industry
Soil carried by gravity is
alluvial
eolian
colluvial
glacial
The true statement about 'green-house effect' is that it is caused by :
CO2 only
SO2 only
CO2 and SO2
CO2, CFC, CH4 and NO2 gases
What is bioaccumulation?
Which of the following diseases is related to cadmium pollution?
Minamata
Pneumoconiosis
Anaemia
Itai- Itai
Which of the following is not a Green-house gas?
N2O
CFC
O3
CO2
SO2 pollution is indicated by
Desmodium (grasses)
Sphagnum (mosses)
Usnea (lichens)
Cucurbita (climbers)
Which one of the following is mainly responsible for green houses effect?
SO2
CO2
CO
O2
Nutrient enrichment of a lake will cause
eutrophication
stratification
biomagnification
bioaccumulation