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Class XII Chemistry d and f Block Elements Quiz 2

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Question 1

Which is the oxidation state of Fe in the product formed when acidified potassium ferrocyanide is treated with H₂O₂?

Question 2

In the equation,

identify the metal M.

Question 3

The atomic number of cobalt is 27. The number of unpaired electrons in Co³⁺ is

Question 4

Which of the following is not formed when

reacts with acidic

solution?

Question 5

The compound formed as a result of oxidation of ethyl benzene by KMnO₄ is:

Question 6

Which of the following oxidation states is the most common among the lanthanoids?

Question 7

The atomic number of cerium (Ce) is 58. The correct electronic configuration of

ion is

Question 8

Which of the following statements regarding lanthanides is false?

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