Which of the following match is INCORRECT :
$Hg_2I_2 →$ Green
$Ag_2CrO_4→ $ Brick red
$BiI_3 → $ Orange
$BaCrO_4 → $ Yellow
Which one of the following metals will not reduce ${H_2}O$
The maximum and minimum melting point of first and second transition series elements respectively are obtained with
Besides $Zn$ and $Cu$, german silver contains the metal
The correct order of decreasing second ionisation enthalpy of $Ti(22), V(23), Cr(24)$ and $Mn(25)$ is
Which of the following is ferromagnetic