First slide

How to Analyse Chemical Composition

Question

Mark the incorrect option.

Easy

A

Carbon : % weight in earth’s crust < % weight in human body
B

Magnesium : % weight in earth’s crust > % weight in human body
C

Sulphur : % weight in earth’s crust < % weight in human body
D

Sodium : % weight in earth’s crust < % weight in human body.

Solution

Sodium of earth crust is 2.8% and in human body 0.2%.

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