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Chemistry

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

Lead
Copper
Cadmium
Chromium

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Chemistry
Which gas does not form the part of atmosphere ?

None of these
Chlorine
Nitrogen
Helium

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Chemistry
PH value between 6.5-7.5 makes the soil

Neutral
Acidic
None of these
Basic

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Chemistry
Which of the following is used in making smoke bombs?

Sulphur
Phosphorus
Hydrogen
Carbon

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Chemistry
Which one of the following is a major green house gas?

Freon
Carbon monoxide
Chloro fluorocarbon
Carbon dioxide

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Chemistry
Which of the following is an iron ore ?

Bauxite
Magnetite
Lignite
Nitrite

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MORE MCQ ON Chemistry

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