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Lucas test is associated with

Answer»

Phenol
Carboxylic acid
Alcohols
Aldehydes

Solution :Lucas test is employed to distinguish between `1^(@),2^(@)` and `3^(@)` alcohols.
Lucas REAGENT i.e. conc. HCl and anhyd `ZnCl_(2)` is ADDED to alcohols and the appearance of turbidity due to formation of alkyl chloride HELPS in the distinction of alcohols.
If turbidity APPEARS immediately, alcohol is TERTIARY. If turbidity appears in 5 mins, alcohol is secondary.
If solution remains clear, i.e. no turbidity, alcohol is primary.


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