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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Dinesh khalmaniya 1
option C Explanation- The chromate ion (yellow colour) in acidic medium changes to dichromate ionCr2O72− (orange - red colour). In alkaline medium, reverse happens. In solution,the dichromate ions convert to chromate ions by the action of a base. Thus chromate ion and dichromate ion exists in equilibrium.
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