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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
- Fe^(3+) is more stable than Fe^(2+) . Explain.
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- Explain :Transition elements exhibit variable oxidation states.
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- Express 1036 in roman numbers.
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- Complete the following chemical equation : KMnO4 overset (513K) rarr
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- Complete the following chemical equation : MnO2+ KOH + O2 rarr
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- Does actinoids show actinoid contraction similar to lanthanoid contrac...
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- Transition metals form mostly coloured compounds.Explain.
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- Complete the following chemical equation : MnO4^(-)+ NO2^(-)+ H^(+) ra...
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- Give the preparation of Potassium Permanganate from Pyrolusite ore.
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- Explain how the colour of a solution of K2Cr2O7 depends on the pH of t...
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- Explain, giving reasons, which one of the following pairs exhibits the...
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- Explain, giving reasons, which one of the following pairs exhibits the...
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- Give one method of Preparation of K2Cr2O7 from sodium chromate.
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- Why is Cu considered to be a transition element and Zn not ?
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- Explain the following observation : Cu^+ ion is not known in aqueous s...
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- State what happens when a solid mixture of KCl and K2Cr2O7 is heated w...
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- Name the element showing maximum number of oxidation states among the ...
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- Explain the following observation giving an appropriate reason : Mn^(2...
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- Write the name of metal which shows only +3 oxidation state.
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- What is lanthanoid contraction ?
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