$(I)$ Bromine water
$(II)$ Tollen's reagents
$(III)$ Shiff's reagent
$(a)$ Methionine $(b)$ Isoleucine
$(c)$ Valine $(d)$ Cysteine
$(a)$ 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
$(A)$ Glucose $(B)$ Gulose
$(C)$ Fructose $(D)$ Maltose
$(E)$ Mannose