Chemistry - Redox Reactions Question with Solution | TestHub

How many statements are correct:

(A) Permanganate titration in presence of hydrochloric acid is unsatisfactory

(B) ${\mathrm{Mn}}^{2+}$ compounds are more stable than ${\mathrm{Fe}}^{2+}$ towards oxidation to their +3 state

(C) Ammonical ${\mathrm{AgNO}}_3$. converts glucose to gluconic acid and metallic silver is precipitated

(D) Titanium and copper both in the first series of transition metals exhibits +1 oxidation state most frequently.

(E) Anhydrous ferric chloride is formed by heating metallic iron in a stream of dry chlorine gas.

(F) Metre scales are made up of invar alloy

(G) Rusting iron is due to formation of ${\mathrm{Fe}}_2{\mathrm{O}}_3+\mathrm{Fe}(\mathrm{OH}{)}_3$

(H) Transitional elements in positive oxidation state can act as Lewis acid.

(I) Bordeaux mixture is used as fungicide. It is a mixture of ${\mathrm{CuSO}}_4+\mathrm{Ca}(\mathrm{OH}{)}_2$

(J) ${\mathrm{Ce}}^{4+}$ (cerric ion) is used as an oxidising agent in volumetric analysis