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Which of the following statements is not correct?

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${FeSO}_{4} \cdot 7 H_{2} O$ acts as a primary standard in the volumetric analysis

On standing, the crystals of ferrous sulphate becomes brown

On strong heating, ferrous sulphate undergoes the reaction $2 {FeSO}_{4} \to {Fe}_{2} O_{3} + {SO}_{2} + {SO}_{3}$

Ferrous sulphate is a reducing agent

answer is A.

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Detailed Solution

${FeSO}_{4} \cdot 7 H_{2} O$ does not act as a primary standard in the volumetric analysis as it is oxidizable in air.

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