Stainless steel contains:

Which of the following may be colourless?

Transition metal with low oxidation number will act as

When ${{\rm{I}}^ - }$ is oxidized by ${\rm{MnO}}_4^ -$ in alkaline medium, ${{\rm{I}}^ - }{\rm{\;convets\;into}}$

The radius of ${\rm{L}}{{\rm{a}}^{3 + }}$ (Atomic number of La = 57) is 1.06 Å. Which one of the following given values will be closest to the radius of ${\rm{L}}{{\rm{u}}^{3 + }}$?(Atomic number of Lu=71)

When steam is passed over heated iron, one of the products is:

Among the following series of transition metal ions, the one where all metal ions have $3{d^2}$ electronic configuration is:

The first man-made atom is:

Which of the following pairs of ions have the same spin-only magnetic moment?

On strongly heating ${\rm{AgN}}{{\rm{O}}_3}$ we get:

The relatively high $E^\circ$ value for the $Mn^{3+}/Mn^{2+}$ redox couple compared to $Cr^{3+}/Cr^{2+}$ and $Fe^{3+}/Fe^{2+}$ is primarily attributed to the: