List of top Chemistry Questions on d -and f -Block Elements asked in KCET

The electronic configuration of transition element "X", is +3, oxidation state is $ {[Ar] 3d^5}$. What is its atomic number ?

On heating potassium permanganate, one of the following compound is not obtained :

$ { MSO_4 ->[NH_4OH] $\underset{\text{white}}{ {X}}$\downarrow ->[NH_4OH][exess] Y ->[H_2S] Z \downarrow}$ Here $M$ and $Z$ are

The spin only magnetic moment of $Fe^{2+}$ ion $(in\, B.M.)$ is approximately

A white crystalline salt $A$ reacts with dilute $HCl$ to liberate a suffocating gas $B$ and also forms a yellow precipitate. The gas $B$ turns potassium dichromate acidified with dilute $H_2SO_4$ to a green coloured solution $C, A, B$ and $C$ are respectively

The spin only magnetic moment of $Mn^{+4}$ ion is nearly____

In the periodic table metals usually used as catalysts belong to

Formation of coloured solution is possible when metal ion in the compound contains

Stainless steel does not rust because :

Match the following:

I.	Zn2+	i.	d8 configuration
II.	Cu2+	ii.	colourless
III.	Ni2-	iii.	μ=1.73BM

Which of the following statements related to lanthanoids is incorreect?