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Chemistry

Chemistry
What is the element that is in the highest percentage in the composition of the earth ?

Silicon
Oxygen
Magnesium
Iron

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Chemistry
Malathion is a/an

Pesticide
Insecticide
Fumigant
Preservative

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Chemistry
The chemical bahaviour of an atom depends upon

The number of protons in its nucleus
The number of neutrons in the nucleus
The number of electrons orbiting around the nucleus
The number of nucleons in the nucleus

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Chemistry
The main source of Naphthalene is

Coal-tar
Camphor
Diesel
Charcoal

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Chemistry
Oxygen has (+) oxidation number only in

OF2
H2O (2)
N2O
C12O

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Chemistry
The coordination number of body centered atom in cubic structure is

4
10
8
6

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MORE MCQ ON Chemistry

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