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MCQ on redox titrations: Page-2

Calculate the color range interval of the following indicator.

(A) 0.5-2.5

(B) 1.25-1.75

(C) 0.65-0.75

(D) 1.47-1.53

If the molecular weight of KMnO 4 is 158, the equivalent for a reaction of MnO 4 - →Mn 2+ is

(A) 79

(B) 15.8

(C) 74.5

(D) 31.6

The negative value of standard electrode potential indicates, the metal is
(P) Easily oxidized

(A) P,S

(B) Q,R

(C) P,R

(D) Q,S

In an electro chemical cell, reduction takes place at

(A) Anode

(B) Cathode

(C) Salt bridge

(D) It depends on the potential applying

The oxidation state of arsenic in arsenic trioxide is

(A) 6

(B) 2

(C) 3

(D) 5