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Chemistry

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

Magnesium
Iron
Oxygen
Silicon

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Chemistry
How many atoms of oxygen are in a glucose molecule

6
4
3
10

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Chemistry
Which one is the simplest aromatic hydrocarbon

Aspirin
Benzene
Picric acid
Chloride

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Chemistry
Green house effect is accelerated by

Rapid industrialization
Increased transportation activity
All of these
Deforestation

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Chemistry
In galvanization, iron is coated with

Nickel
Zinc
Tin
Copper

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Chemistry
The process of removing calcium and magnesium from hard water is known as

Filtration
Flocculation
Water softening
Sedimentation

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MORE MCQ ON Chemistry

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