MCQ
Fehling's solution ' $A$ ' is
- Aalkaline copper sulphate
- Balkaline solution of sodium potassium tartrate (Rochelle's salt)
- Caqueous sodium citrate
- ✓aqueous copper sulphate
Fehling solution ' $B$ ' = Alkaline sodium potassium tartrate (Rochelle salt)
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Arginine, Phenylalanine, Aspartic acid, Cysteine, Histidine, Valine, Proline

$Cl_2 + 2e^-\to 2CI^{\Theta }$ ; $E^o = 1.36\, V$
$Mn^{+3} + e^-\to Mn^{+2}$ ; $E^o = 1.50\, V$
$Fe^{+3} + e^-\to Fe^{+2}$ ; $E^o = 0.77\, V$
Which of the following is a correct statement