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NEET levelSingle correct optionDifficulty 1 of 3mt111

Which of the following is the formula of haematite, the chief ore of iron?

A $Fe X_{3} O X_{4}$
B $FeCO X_{3}$
C $Fe X_{2} O X_{3}$
D $FeS X_{2}$

Answer: C

Haematite is ferric oxide,

Fe X_{2} O X_{3}

.

Fe X_{3} O X_{4}

is magnetite,

FeCO X_{3}

is siderite and

FeS X_{2}

is iron pyrites.

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