MCQ
What changes does not occur when $K_2Cr_2O_7$ react with $H_2O_2$ solution
- AOrange colour of solution turns blue
- ✓$O.S$. of $Cr$ atom decreases
- C$O.S.$ of $Cr$ atom remains constant
- DNone of these
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$V^{+4},\,Ni^{+2},\, Ti^{+3}, \,Co^{+2}, \,Fe^{+3}, \,Cu^{+2}$
$1.$ $P$ and $Q$, respectively, are the sodium salts of
$(A)$ hypochlorus and chloric acids
$(B)$ hypochlorus and chlorus acids
$(C)$ chloric and perchloric acids
$(D)$ chloric and hypochlorus acids
$2.$ $R , S$ and $T$, respectively, are
$(A)$ $SO _2 Cl _2, PCl _5$ and $H _3 PO _4$
$(B)$ $SO _2 Cl _2, PCl _3$ and $H _3 PO _3$
$(C)$ $SOCl _2, PCl _3$ and $H _3 PO _2$
$(D)$ $SOCl _2, PCl _5$ and $H _3 PO _4$
Give the answer question $1$ and $2.$