- Home
- Standard 12
- Chemistry
General Principles and processes of Isolation of Elements
easy
Which of the following does not contain $Mg$ :
A
magnetite
B
magnesite
C
asbestos
D
carnallite
Solution
Magnetite is a rock mineral and one of the main iron ores, with the chemical formula $Fe _3 O _4$. It does not contain $Mg$.
Magnesite is a magnesium carbonate mineral with a chemical composition of $MgCO _3$
Asbestos is $CaMg _3\left( SiO _3\right)_4$.
Carnallite is an evaporite mineral, a hydrated potassium magnesium chloride with formula $KMgCl _3 \cdot 6\left( H _2 O \right)$.
Standard 12
Chemistry
