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General Principles and processes of Isolation of Elements
easy
Which one of the following is a mineral of iron?
A
Malachite
B
Cassiterite
C
Pyrolusite
D
Magnetite
(AIPMT-2012)
Solution
Mineral Chemical composition
Malachite -$\quad C u C O_{3} . C u(O H)_{2}$
Cassiterite -$\quad S n O_{2}$
Pyrolusite -$\quad M n O_{2}$
Magnetite -$F e O_{4}$
Thus, magnetite is a mineral of iron.
Standard 12
Chemistry
