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Which of the following is amphoteric oxi...

Which of the following is amphoteric oxide? `Mn_2O_7, CrO_3, Cr_2O_3, CrO, V_2O_5, V_2O_4`

A

`V_2O_5, Cr_2O_3`

B

`Mn_2O_7, CrO_3`

C

`CrO, V_2O_5`

D

`V_2O_5,V_2O_4`

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. There are 14 elements in actinoid series. Which of the following eleme...

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  2. The number of moles of KMnO4 that will be needed to react with one ...

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  3. Which of the following is amphoteric oxide? Mn2O7, CrO3, Cr2O3, CrO, V...

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  4. Gadolinium belongs to 4f series. It’s atomic number is 64. Which of th...

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  5. Interstitial compounds are formed when small atoms are trapped inside ...

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  6. The magnetic Moment is associated with its spin angular momentum and o...

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  7. How does KMnO4 act as a powerful oxidizing agent in neutral, alkaline ...

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  8. Which of the following statements is not correct ?

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  9. When acidified K2Cr2O7 solution is added to Sn^(2+) salts than Sn^(2+...

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  10. Fe shows an oxidation state of +1 in :

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  11. Why do elements in the same group have similar physical and chemical p...

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  12. Write one oxidising reaction of KMnO4 in basic medium.

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  13. Give the formula of following compound : pentaamminecarbonatocobalt(II...

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  14. Give the formula of following compound : mercury tetrathiocyanatocobal...

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  15. Write the iupac name of the compound : [Co (NH3)4 (H2O) Cl]Cl2

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  16. Write the iupac name of the compound : K3[Al (C2O4)3]

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  17. Write the iupac name of the compound : [Co (en)2 Cl2]^(+1)

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  18. Write the iupac name of the compound : [Ni (NO)4 ]

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  19. Write the iupac name of the compound : [Cu (NH3) (H2O) Cl2]

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  20. Write the iupac name of the compound : K2[Cu (CN)4]

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