Given below are two statements :
Statement I : In oxalic acid vs ${KMnO}_{4}$ (in the presence of dil $H_{2} {SO}_{4}$ ) titration, the solution needs to be heated initially to 60°C, but no heating is required in Ferrous ammonium sulphate (FAS) vs
${KMnO}_{4}$ titration (in the presence of dil $H_{2} {SO}_{4}$ )
Statement II : In oxalic acid vs ${KMnO}_{4}$ titration, the initial formation of ${MnSO}_{4}$ takes place at high temperature, which then acts as a catalyst for further reaction. In the case of FAS vs ${KMnO}_{4}$ , heating oxidizes ${Fe}^{2 +}$ into ${Fe}^{3 +}$ by oxygen of air and error may be introduced in the experiment.
In the light of the above statements, choose the correct answer from the options given below :

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Both Statement I and Statement II are true.

Both Statement I and Statement II are false.

Statement I is true but Statement II is false.

Statement I is false but Statement II is true.

answer is B.

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Detailed Solution

$\begin{aligned} 2 {MnO}_{4}^{-} + 5 (COO)_{2}^{2 -} + 16 H^{+} \to 10 {CO}_{2} + 2 {Mn}^{2 +} + 8 H_{2} O \end{aligned}$
This reaction is slow at room temperature, but becomes fast at 60°C. Manganese(II) ions catalyze the reaction; thus, the reaction is autocatalytic;
once manganese(II) ions are formed, it becomes faster and faster.

The titration of FAS v/s KMnO₄ do not require heating because at higher temeprature the oxidation of Fe⁺² to Fe⁺³ by atmospheric O₂ will be prominent.