Areddish substance on heating gives of a capour whichcondenses on the – InterviewSolution

1.	Areddish substance on heating gives of a capour whichcondenses on the sides of the test tube and the substance turn blue If on cooling water is added to the residue it turm to itsoriginal colour .The substance is
Answer» IODINE crystals Copper sulphate crystals Cobalt CHLORIDE crystals ZINE oxide Solution :It is a preperty of `CoCI_(2)`

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