Q. 144.0( 4 Votes )
A dilute ferrous sulphate solution was gradually added to the beaker containing acidified permanganate solution. The light purple colour of the solution fades and finally disappears. Which of the following is the correct explanation for the observation?
A. KMnO4 is an oxidizing agent, it oxidizes FeSO4
B. FeSO4 acts as an oxidizing agent and oxidizes KMnO4
C. The colour disappears due to dilution; no reaction is involved.
D. KMnO4 is an unstable compound and decomposes in presence of FeSO4 to a colourless compound.
Potassium permanganate (KMNO4) is a strong oxidizing agent. It oxidizes FeSO4.
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Which among the following statement(s) is(are) true? Exposure of silver chloride to sunlight for a long duration turns grey due to:
(i) The formation of silver by decomposition of silver chloride
(ii) Sublimation of silver chloride
(iii) Decomposition of chlorine gas from silver chloride
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(i) Reaction of water with quicklime
(ii) Dilution of an acid
(iii) Evaporation of water
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