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| કોલમ-$I$ | કોલમ-$II$ |
| $A$. $Cr_2O_7^{2-}$ | $1$. $+3$ |
| $B$. $MnO_4^{-}$ | $2$. $+4$ |
| $C$. $VO_3^{-}$ | $3$. $+5$ |
| $D$. $FeF_6^{3-}$ | $4$. $+6$ |
| $5$. $+7$ |
| સંયોજન | ઓક્સિડેશન આંક |
| $1$. $CrO_5$ | $a$. $+6$ |
| $2$. $H_2SO_4$ | $b$. $+1$ |
| $3$. $C_4OCl_2$ | $c$. $-1$ |
| $4$. $(CH_3)_2SO$ | $d$. $+2$ |
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