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A mixture of FeO and Fe(3)O(4) when heat...

A mixture of `FeO` and `Fe_(3)O_(4)` when heated in air to a constant weight, gains 5% of its weight. Find the composition of the intial mixutre.

A

79 . 75

B

20 . 25

C

30 . 25

D

10 . 25

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The correct Answer is:
B
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AAKASH INSTITUTE ENGLISH-SOME BASIC CONCEPTS OF CHEMISTRY -ASSIGNMENT SECTION B (Objective Type Questions (One option is correct))
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  10. Equivalent weight of H(3) PO(2) is (M rarr molecular weight)

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  19. A mixture of FeO and Fe(3)O(4) when heated in air to a constant weight...

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  20. 1 ml of gaseous aliphatic compound C(n) H(3n) O(m) is completely burnt...

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