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ORGANIC INDICATORS!

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DNPH is an indicator used to identify the presence of aldehydes and ketones.If aldehydes and ketones are present,orange ppt can be seen.
Tollens reagent is uesd to differentiate between aldehydes and ketones.It forms silver mirror when it is made to react with an aldehyde whereas it shows no reaction with ketones.
Fehlings solution is also used to identify aldehydes.On addition of fehlings sol the solution becomes brick red(i don't exactly remember the color change:( ) but give no reaction with ketone:)
 
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