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Chemistry

Chemistry
Air shows the property of

None of these
Both A and B
O2
N2

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Chemistry
Which of the toxic heavy metals is found in modern tannery industries ?

Nickel
Chromium
Zinc
Lead

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Chemistry
Of the following, which one pollutes the air of a big city ?

Lead
Chromium
Copper
Cadmium

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Chemistry
Alcoholic (– OH) group can be identified by :

Ozonolysis Reaction
FeCl3Test
Esterification Test
Tollen's Reagent Test

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Chemistry
An important green-house gas other than methane being produced from the agricultural fields is

Nitrous oxide
Ammonia
Arsine
Sulphur dioxide

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Chemistry
Denatured spirit is ethanol mixed with

Kerosene
Water
Pyridine
Petrol

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