(A) P
(B) Q
(C) R
(D) S
(A) Cerium sulfate
(B) l,l0-phenanthroline-iron(II) ion
(C) Iodine
(D) Diphenylamine
(A) Oxidation potential
(C) Reduction potential
(C) Both
(D) None of the above
(A) 3
(B) 2
(C) 5
(D) 7
(A) Spontaneous reaction
(B) Slow reaction
(C) Incomplete reaction
(D) Complete reaction
(A) Gain of oxygen
(B) Loss of proton
(C) Increase in oxidation state
(D) Loss of electrons