A substance which is not paramagnetic is :

C r (C l O_{4})_{3}

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K M n O_{4}

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T i C l_{3}

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V O B r_{2}

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Solution

The correct option is B $K M n O_{4}$
As we know, magnetic moment
$μ = \sqrt{n (n + 2)}$ BM

$K M n O_{4}$
+7 n = 0 diamagnetic

$C r (C l O_{4})_{3}$
+3 n =3 paramagnetic

$T i C l_{3}$
+3 n = 1 paramagnetic

$V O B r_{2}$
+4 n = 1 paramagnetic

Hence,option B is correct.

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