Which of the following compounds is metallic and ferromagnetic ?
Which of the following compounds is metallic and ferromagnetic ?
- [JEE MAIN 2016]
- A
$VO_2$
- B
$MnO_2$
- C
$TiO_2$
- D
$CrO_2$
Similar Questions
Properties common to the elements manganese, iron, cobalt, nickel and copper include the ready formation by them all of
$(I)$ coloured ions in aqueous solution
$(II)$ oxides of nitrogen are formed on reaction with concentrated $HNO_3$
$(III)$ chlorides of formula $MCl_2$ and $MCl_3$
Properties common to the elements manganese, iron, cobalt, nickel and copper include the ready formation by them all of
$(I)$ coloured ions in aqueous solution
$(II)$ oxides of nitrogen are formed on reaction with concentrated $HNO_3$
$(III)$ chlorides of formula $MCl_2$ and $MCl_3$
The spin-only magnetic moment value of the compound with strongest oxidizing ability among $MnF _{4}, MnF _{3}$ and $MnF _{2}$ is $.............$ $B.M.$ [nearest integer]
The spin-only magnetic moment value of the compound with strongest oxidizing ability among $MnF _{4}, MnF _{3}$ and $MnF _{2}$ is $.............$ $B.M.$ [nearest integer]
- [JEE MAIN 2022]
The addition of metals like $Cr,\,Mn,\,W$ and $Ni$ to ordinary steel makes it
The addition of metals like $Cr,\,Mn,\,W$ and $Ni$ to ordinary steel makes it
$MnO _4^{-}$oxidises $(i)$ oxalate ion in acidic medium at $333\, K$ and $(ii)$ $HCl$. For balanced chemical equations, the ratios $\left[ MnO _4^{-}: C _2 O _4^{2-}\right]$ in $(i)$ and $\left[ MnO _4^{-}: HCl \right]$ in $(ii)$ respectively are
- [KVPY 2011]
The metal commonly present in brass and german silver is
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