Q.

Which of the following represents lemonite ore?

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a

Fe2O3

b

Fe3O4

c

Fe2O33H2O

d

FeCO3

answer is C.

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Detailed Solution

An iron ore called limonite is made up of a variety of hydrated iron(III) oxide-hydroxides. Fe2O33H2O is a common way to write the general formula, however this is not totally accurate because the amount of oxide to hydroxide can vary greatly.

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