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Environmental Science

Environmental Science
Red data book contains data of

economically important species
threatened species
all animal species
all plant species

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Environmental Science
A high Biological Oxygen Demand (BOD) indicates that:

Low level of microbial pollution
absence of microbial action
High level of microbial pollution
water is pure

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Environmental Science
The ozone at ground level is primarily from __________ precursors.

Fossil fuel
Oxygen
Methane
CFCs

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Environmental Science
The Term Smog was introduced in 1905 by

Le Chatelier
Canon
Des Voeux
Hult

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Environmental Science
_________ are used for converting saline or brackish water into pure distilled water.

Photo voltaic cells
Solar desalination systems
Solar water-heating
Solar cookers

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Environmental Science
Air pollution is severe in

Cities
all of these
Industrialised areas
Densely populated areas

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MORE MCQ ON Environmental Science

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