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Class XII Chemistry d and f Block Elements Quiz 1

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Question 1

The number of unpaired electrons in [Fe(H₂O)₅NO]SO₄

Question 2

Iron sulphide is heated in air to form ‘A’ an oxide of sulphur. ‘A’ is dissolved in water to give an acid. The basicity of this acid is

Question 3

The element that can exhibit the highest number of oxidation state amongst the following is

Question 4

Which statement is not correct with respect to transition metals?

Question 5

Zinc reacts with excess of caustic soda to form

Question 6

Most common oxidation states of Ce (Cerium) are:

Question 7

Ferric chloride is used for etching copper and silver metals. This is due to –

Question 8

The colour of KMnO₄ is due to:

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Nov 28JEE & BITSAT