Q. Percentage of Fe⁺² can be determined by

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Q. In the process of oxidation, 20% of iron and steel is destroyed because of

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Q. The reactions which cost a lot of money are the ones which are

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Q. To determine that a substance is oxidized or reduced other factor to consider is

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Q. Hydrated iron (III) is called

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Q. The loss of oxygen from an element is simple

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Q. When iron reacts with oxygen in the presence of water it produces

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Q. The fuel in space shuttle's rocket burns due to the occurrence of

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Q. The reaction in which oxidation and reduction takes place at same time is called as

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Q. Gain of oxygen (O⁻²) by an element is termed as

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Q. The lowest relative melting point among the four oxides is of

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Q. Oxide with very high relative melting point is

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Q. Oxidation state +2 of a compound have greater ionic character than oxidation state of

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Q. Element to oxidize with low oxidation state needs

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Q. The relative stability of oxidation states +2 and +4 decreases

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Q. The oxidation number of chromium in K₂Cr₂O₇

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Q. Elements in free state have oxidation state

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Q. In KMnO₄, oxidation state of Mn is

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Q. In the reaction 2Fe + 3Cl₂ → 2FeCl₃

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Q. The apparent charge on an atom of an element in a molecule or an ion is called

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