Structure of Ascorbic acid as represented as follows.

How many of the following reagents can give positive test with ascorbic acid.
`{:(Cu_(2)Cl_(2)+NH_(4)OH,2","4-DNP,"Na metal",HCl+ZnCl_(2),FeCl,),((I),(II),(III),(IV),(V),),(NaOH+"Phenopthalein","dil".KMnO_(4),Br_(2)//H_(2)O,AgNO_(3)+NH_(4)OH,I_(2)+NaOH,),((VI),(VII),(VIII),(XI),(X),):}`

Answer

6

Explanation

`Na` metal, `HCl+ZnCl_(2), FeCl_(3), NaOH+"Phenolpthalein"`, dill. `KMnO_(4), Br_(2)//H_(2)O` gives positive test with ascorbic acid.