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hash_include (381)

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Olaaa!! Perrrfect answer. 59  [102 rates]

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umm.. i know a few..

(NH2)S is used to selectively reduce one of the  2 (or more) nitro groups
 in a benzene ring. but the nitro group it reduces depends in various factors like steric, H- bonding, etc.

then P/HI is used to reduce a -COOH grp to -CH3 tho im not sure if its selective in natture or not...

shall update if i remember more :)

cheers

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