$4-$ carbohydrate glucose, lactose , sucrose, starch are present. Different test is carried out with $4-$ carbohydratcs separately. Following observation takes place.
$(a)$ Heated : it is charred
$(b)$ $I_2$ solution : no violet colour
$(c)$ Fehling solution : reddish brown ppt. is observed
$(d)$ It does not reduce copper$(II)$ acetate to $Cu_2O$ . No red precipiated is observed in $5/ min$
The carboxylate which satisfy all the above observation
Medium
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