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Which of these ions is expected to be co...

Which of these ions is expected to be colored in aqeous solution?
[I] `Fe^(3+)` [II] `Zn^(2+)` [III] `AI^(3+)` [IV] `Sc^(3+)`

A

[I] only

B

[III] only

C

[I] and [II] only

D

[I],[II] and [III]

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The correct Answer is:
A
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RESONANCE ENGLISH-D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS -National Standard Examination In chemistry
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  3. Which of these ions is expected to be colored in aqeous solution? [...

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  4. How many unpaired electrons ae in a Fe^(2+) ion in the ground state?

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  5. Which of the following transition metal ions is colourless ?

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  6. The compound with the lowest oxidation state is:

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  7. The aqua ion which will be almost colorless is-

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  8. MnO(4)^(-) is of intense pink colour, though Mn is in (+7) oxidation s...

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  9. What happens when (write balanced chemical equations only) Dry chlor...

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  10. Highest magnetic moments, shown by the transition metal ion with the ...

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  11. The compound in which Mn has oxidation state of +3 is

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  12. Lanthanoid contraction is caused due to:

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  13. Which of the following ion is colourless?

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  14. The lanthanide compound which is used as a most powerful liquid laser ...

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  15. Which of the following weighs less when weighed in magnetic field?

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  16. In which of the following compounds, the oxidation number of the start...

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  17. One of the consituents of German silver is

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  18. A mixture of acidified K(2)Cr(2)O(7) and 10% Kl is titrated against a...

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  19. The ions from among the following which are colourless are : (i)Ti^(...

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  20. Bell-metal is an alloy of

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