

MCQOPTIONS
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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. \[C{{r}_{2}}{{O}_{3}}\] | |