Manganese steel is used for making railway tracks because
it is hard with high percentage of $Mn$
it is soft with high percentage of $Mn$
it is hard with small concentration of manganese with impurities
it is soft with small concentration of manganese with impurities
Which of the following will give green hydrated ion
Which pair of compound is expected to show similar colour in aqueous medium
Which of the following weighs less when weighed in magnetic field
A compound of a metal ion $M^{x+}$ $(Z = 24)$ has a spin only magnetic moment of $\sqrt {15}$ Bohr Magnetons. The number of unpaired electrons in the compound are
Which of the following is arranged in order of increasing melting point?