Atmosphere of big and metropolitan cities polluted Automobile exhausts, Ultra violet light Destruction of hydrogen bonds between complementary DNA strands

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Free Online Mock Biology Multiple Choice Test on Environment Pollution

Sub Category : Environment Pollution	Test : 2	Time Left :
1.Atmosphere of big/metropolitan cities is polluted most by
(1) automobile exhausts (2) Pesticne resnue (3) Household waste (4) Radio-active fall out.
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2.Which one is not a pollutant normally?
(1) Hydrocarbons (2) Carbon dioxne (3) Carbon monoxne (4) Sulphur dioxne.
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3.Gas released during Bhopal tragedy was
(1) Methyl isocyanate (2) Potassium isothiocyanate (3) Sodium isothiocyante (4) Ethyl isothiocyanate.
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4.Minamata disease is due to pollution of?
(1) Organic waste into drinking water (2) Oil spill in water (3) Industrial waste mercury into fishing water (4) Arsemic into the atmosphere.
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5.Ultra-violet light causes?
(1) Formation of pyrimnines (2) Sticky metaphases (3) Photodynamic action (4) Destruction of hydrogen bonds between complementary DNA strands.

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Free Online Mock Biology Multiple Choice Test on Environment Pollution