Which of these is a reducing agent?

C r O_{3} / H^{+}

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K M n O_{4}

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L i A l H_{4}

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O_{3}

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Solution

The correct option is C $L i A l H_{4}$
$C r O_{3} / H^{+}$ is used to oxidize alcohols $\Rightarrow$ Oxidizing agent
$K M n O_{4}$ is used to oxidize alcohol to acids $\Rightarrow$ Oxidizing agent
$O_{3}$ is addition of oxygen so, $\Rightarrow$ Oxidizing agent
$L i A l H_{4}$ is used to reduce aldehydes, ketones, acids, esters $\Rightarrow$ Reducing agent

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Similar questions

Which of the following statement is incorrect about $H_{2}$ $O_{2}$ ?

H C l

K M n O_{4}

$O_{3}$ is not a/an:

O_{3}

Question 6

Consider the reactions

(i) $H_{2} O_{2} + 2 H I \to I_{2} + 2 H_{2} O$
(ii) $H O C l + H_{2} O_{2} \to H_{3} O^{+} C l^{-} + O_{2}$

Which of the following statements is correct about $H_{2} O_{2}$ with reference to these reactions? Hydrogen peroxide is ........

(a) an oxidising agent in both (i) and (ii)

(b) an oxidising agent in (i) and reducing agent in (ii)

(d) a reducing agent in both (i) and (ii)

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