1.

Potassium dichromate when heated with concentrated sulphuric acid and a soluble chloride, gives brown-red vapours of:

A. \[Cr{{O}_{3}}\]
B. \[CrC{{l}_{3}}\]
C. \[Cr{{O}_{2}}C{{l}_{2}}\]
D. \[C{{r}_{2}}{{O}_{3}}\]
Answer» D. \[C{{r}_{2}}{{O}_{3}}\]


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