Q. 403.5( 2 Votes )

The chemical reaction between two substances is characterised by a change in colour from orange to green. These two substances are most likely to be:
A. potassium dichromate solution and sulphur dioxide B. potassium permanganate solution and sulphur dioxide
C. potassium permanganate solution and lemon juice
D. potassium dichromate solution and carbon dioxide.

Answer :

Potassium dichromate solution and Sulphur dioxide on reaction changes colour from orange to green.

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