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Acid rain is caused due to pollution of atmosphere by
oxides of nitrogen and sulphur
oxides of nitrogen and phosphorus
oxides of carbon and nitrogen
oxides of nitrogen and methane
A.
oxides of nitrogen and sulphur
From the national point of view which of the following indicates Micro Approach?
Competition for food, light and space is most severe in
The green colour seen in firework displays is due to the chloride salt of
Kautilya's 'Artharshastra' mainly deals with
Rainbows are produced by when sunlight
Which of the following is used in pencils?
The branch of medicine involving synthetic chemical compounds is
Bubbles of air rise up through liquids due to
The boiling point of liquids vary as
The largest source of pollution in the world is
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