When a equimolar mixture of $C u_{2} S a n d C u S$ titrated with $B a {(M n O_{4})}_{2}$ in acidic medium, the final products contains $C u^{2 +}$ , $S O_{2}$ and $M n^{2 +}$ . if the mol. mass of $C u_{2} S, C u S a n d B a {(M n O_{4})}_{2}$ are $M_{1}, M_{2} a n d M_{3}$ respectively then :

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eq. mass of $B a {(M n O_{4})}_{2}$ is $\frac{M_{3}}{5}$

eq. mass of $C u_{2} S i s \frac{M_{1}}{8}$

eq. mass of $C u S i s \frac{M_{2}}{6}$

$C u_{2} S a n d C u S$ both have same equivalent in mixture

answer is A, B.

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