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Chemistry

Chemistry
Chemically ‘Quick Silver is known as

Aluminium
Silver
Mercury
Copper

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Chemistry
Ozone depletion in the stratosphere is mainly caused by

NO2
Chlorogluorocarbons
SO2
NO

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Chemistry
Cooking gas is a mixture of

Carbon monoxide and carbon dioxide
Methane and ethylene
Carbon dioxide and oxygen
Butane and propane

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Chemistry
The ionic radii of N3-, O2-, F- and Na+ follows the order

O2- > F- > Na+ > N3-
N3- > O2- > F- > Na+
N3- > Na+ > O2- > F-
Na+ > O2- > N3- > F-

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Chemistry
When a nutrient like fertilizer is present in large quantities in a water bodies, plants grow and decay in large numbers because of suffocating of pond that does not leave enough oxygen needed to support life. This type of pollution is called

Smog
None of these
Green house effect
Eutrophication

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Chemistry
Rectified spirit is :

Methylated spirit
100% ethyl alcohol
95% ethyl alcohol
Tincture iodine

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