Statement I : CeO₂ can be used for oxidation of aldehydes and ketones
Statement II : Aqueous solution of EuSO₄ is a strong reducing agent.

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Statement I is true but statement II is false

Both statement I and statement II are false

Both statement I and statement II are true

Statement I is false but statement II is true

answer is A.

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Detailed Solution

Cerium is the second element in its series, and it shows the +3 oxidation state characteristic of the series, it also has a unstable +4 state. In the oxide CeO₂ it has +4 state and it can reduce itself and oxidise the substrate.

Eu²⁺ is a strong reducing agent because Eu³⁺ is more stable than Eu²⁺. Yb in +2 oxidation states acquires half filled-4f⁷ and fully filled-4f¹⁴ configuration. Tb in +4 state has 4f⁷ half-filled stable configuration but it readily gets reduced to common oxidation +3 state.

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