MCQ
The reaction $2{H_2}{O_2} \to 2{H_2}O + {O_2}$ is a
- AZero order reaction
- ✓First order reaction
- CSecond order reaction
- DThird order reaction
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$A$. All the transition metals except scandium form $MO$ oxides which are ionic.
$B$. The highest oxidation number corresponding to the group number in transition metal oxides is attained in $Sc _2 O _3$ to $Mn _2 O _7$.
$C$. Basic character increases from $V _2 O _3$ to $V _2 O _4$ to $V _2 O _5$.
$D$. $V _2 O _4$ dissolves in acids to give $VO _4^{3-}$ salts.
$E$. $CrO$ is basic but $Cr _2 O _3$ is amphoteric.
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