A) reduction of dichromate to give a characteristic colour
B) reduction of dichromate to give a characteristic smell
C) the conversion of alcohol to \[C{{O}_{2}}\] and aldehyde
D) oxidation of dichromate to \[C{{r}^{3+}}\] salt.
Correct Answer: A
Solution :
In this reaction of potasssium dichromate, alcohol and dil. \[{{H}_{2}}S{{O}_{4}}\], chromate (orange) is reduced to \[C{{r}^{3+}}\] (green).
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