1
In Burette
0.05 N (approx.) KMnO
4
solution
2
In conical flask
10 cm
3
MnSO
4
solution+½ TT ZnO paste+2-3 drops of 2 N HNO
3
+potato pieces (2.5g)
3
Indicator
KMnO
4
itself
4
End point
Colourless to faint pink
Table 6a:
The CBR was recorded as ‘Y’ cm
3
by using potassium permanganate solution.