Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Calgon is used for water treatment. Which of the following statement is NOT true about calgon?
A
Calgon contains the 
most abundant element by weight in the earth's crust.
most abundant element by weight in the earth's crust.
B
It is also known as Graham's salt.
C
It is polymeric compound and is water soluble.
D
It doesnot remove 
ion by precipitation.
ion by precipitation.
Text Solution
Verified by ExpertsThe correct answer is:
A
or 
Order of abundance of element in earth crust is
So second most abundant element in earth crust is Si not Ca.
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