Which of the following acts only as reducing agent :

K M n O_{4}

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C a O C 1_{2}

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H_{2} S

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H N O_{2}

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Solution

The correct option is C $H_{2} S$
In $H_{2} S$ , sulphur is it in is lowest oxidation
state so can only act as Reducing
agent by getting oxidised.
$H_{2} S \to S^{2 -} \to S^{0}, S^{+ 4}, S^{+ 6}$

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Similar questions

H_{2} S

S O_{2}

H N O_{3}

H N O_{2}

$H_{2} S$ acts only as a reducing agent while $S O_{2}$ can act both as a reducing and oxidizing agent because

H N O_{3}

H N O_{2}

N

H N O_{3}

H_{2} O_{2}

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