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Chemistry

Chemistry
Nitric acid does not react with

Gold
Iron
Zinc
Copper

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Chemistry
Which of the following is caused by the higher concentration of Nitrogen and Phosphorous ?

Acidity
Alkalinity
Hardness
Eutrophication

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Chemistry
Percentage of lead in lead pencils is

80
31-66
40

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Chemistry
The number of g-molecule of oxygen in 6.02 x 1024CO molecules is

5 gram of molecule
0.5 gram of molecule
10 gram of molecule
1 gram of molecule

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Chemistry
Peroxyacetyl nitrate is a

Secondary pollutant
Acidic dye
Plant hormone
Vitamin

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Chemistry
The acid rain destroys vegetations because it contains

Nitric acid
Ozone
Carbon monoxide
Sulphuric acid

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MORE MCQ ON Chemistry

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