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Oxidation states of the metal in the min...

Oxidation states of the metal in the minerals haematite and magnetite, respectively, are

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The correct Answer is:
D
Haematite =`overset(3+)(Fe_(2)O_(3)` Magnetite =`overset(2+)(Fe^(2+)) . overset(+3)(Fe_(2)O_(3))`
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VMC MODULES ENGLISH-STOICHIOMETRY-II-LEVEL (1)
  1. The difference in the oxidation numbers of two types of sulphul atoms ...

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  2. Oxidation states of the metal in the minerals haematite and magnetite,...

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  3. In the reaction. H(2)S+H(2)O(2) rarr S+2H(2)O describes 1. Acidi...

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  4. Calculate the oxidation state of the underlined atoms in the given spe...

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  5. State the oxidation number of carbonyl carbon in methanal and methanoi...

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  6. When H2S reacts with halogens, halogens are

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  7. Among NH(3), HNO(3), N(2) and Mg(3)N(2) , the number of molecules havi...

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  8. The reaction , P(4) + 3NaOH + 3H(2)O to 3NaH(2)PO(2) + PH(3) is an...

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  9. The oxidation number of oxygen in KO(3),Na(2)O(2 respectively are:

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  10. The oxidation state of sulphur in sodium tetrathionate (Na(2)S(4)O(6))...

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  11. The oxidation state of A, B, and C in a compound are +2, +5, and -2, r...

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  12. Which of the following chemical reactions depicts the oxidizing behavi...

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  13. The oxidation sates of iodine in HIO(4), H(3)IO(5) and H(5)IO(6) are r...

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  14. In which of the following compounds, the oxidation number of iodine is...

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  15. Oxidation number of 'N' in N(3)H (hydrazoic acid) is :-

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  16. MnO(4)^(-) is a good oxidising agent in different mediums changing to ...

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  17. Which of the following acts as an oxidising as well as reducing agent ...

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  18. What is the oxidation state of P in Ba (H(2)PO(2))(2) ?

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  19. Arrange the following in the increasing order of oxidation state of Mn...

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  20. In which of the following reactions hydrogen is acting as an oxidising...

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