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(a) Why do Zr and Hf have similar proper...

(a) Why do Zr and Hf have similar properties? (b) What happens when `K_2Cr_2O_7` is treated with `H_2SO_4` and NaCl solution ? (c) Why do transition metals form alloys easily?

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(b) Why do transition metals form alloy ?

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MODERN PUBLICATION-D AND F-BLOCK ELEMENTS-REVISION EXERCISES ( SHORT ANSWER QUESTION)
  1. (a) Why is the highest oxidation state of a transition metal exhibited...

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  2. (a) Why do the transition elements exhibit higher enthalpies of atomiz...

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  3. (a) Why do Zr and Hf have similar properties? (b) What happens when K2...

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  4. Give the preparation of potassium permanganate from pyrolusite ore.

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  5. (a) What happens when K2Cr2O7 is heated strongly? (b) Transition eleme...

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  6. (a) Describe the preparation of potassium dichromate from chromite ore...

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  7. (a) What is lanthanoid contraction? What is the cause of lanthanoid co...

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  8. (a) Write the electronic configuration of: (i) Co^(2+) (27) (ii) C...

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  9. (a) What is the cause of lanthanoid contraction? Discuss. (b) What is ...

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  10. When chromite ore FeCr(2)O(4) is fuse with NaOH in presence of air, a ...

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  11. Complete the following chemical equations : (i) 8MnO(4)^(-)+3S(2)O(3...

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  12. Give reason for the following : (i) Mn shows the highest oxidation s...

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  13. (a) Write the structure of Cr2O7^(2-) Give two uses of K2Cr2O7 . ...

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  14. (a) Explain the magnetic behaviour of transition metals. (b) Write...

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  15. Explain :(i) Variable oxidation states of d-block elements (ii) d-bloc...

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  16. (a) Define transition elements. (b) Give general electronic configurat...

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  17. Give reason. (a) Cerium (Ce) exhibits +4 oxidation state.(b) Actinoid ...

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  18. Write any three applications of d and f-block elements.

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  19. (i) Which of the following are coloured in aqueous solution ? Give rea...

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  20. (i) Explain why most of the Cu(I) compounds are unstable in aqueous so...

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