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(C) Nitrobenzene can be reduced to aniline using various reducing agents:$1.$ $Sn/HCl$: This is a standard reduction method for nitro compounds to ami

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$5$

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(C) Nitrobenzene can be reduced to aniline using various reducing agents:$1.$ $Sn/HCl$: This is a standard reduction method for nitro compounds to amines.$2.$ $Fe/HCl$: This is also a standard reduction method for nitro compounds to amines.$3.$ $Zn/HCl$: This is a strong reducing agent that can reduce nitrobenzene to aniline.$4.$ $H_2-Pd$: Catalytic hydrogenation effectively reduces the nitro group to an amino group.$5.$ $H_2-$ Raney Nickel: Catalytic hydrogenation using Raney Nickel is also effective for this reduction.$Sn/NH_4OH$ is not a standard reagent for this specific reduction.Therefore,the reagents that can convert nitrobenzene into aniline are $I, III, IV, V,$ and $VI$.The total number of such reagents is $5$.

The total number of reagents from those given below,that can convert nitrobenzene into aniline is ..... . (Integer answer)
$I.$ $Sn/HCl$
$II.$ $Sn/NH_4OH$
$III.$ $Fe/HCl$
$IV.$ $Zn/HCl$
$V.$ $H_2-Pd$
$VI.$ $H_2-$ Raney Nickel

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The total number of reagents from those given below,that can convert nitrobenzene into aniline is ..... . (Integer answer)$I.$ $Sn/HCl$$II.$ $Sn/NH_4OH$$III.$ $Fe/HCl$$IV.$ $Zn/HCl$$V.$ $H_2-Pd$$VI.$ $H_2-$ Raney Nickel