Name the compound. Sodium chloride on reaction with $$\text{K}_2\text{Cr}_2\text{O}_7$$ of in presence of conc. $$\text{H}_2\text{SO}_4$$ in a dry test tube liberates a red fumes. Name of the red fumes.

PLACEHOLDER ANSWER - the answer is a name. This is the chromyl chloride test, $$4\text{NaCl} + \text{K}_2\text{Cr}_2\text{O}_7 + 6\text{H}_2\text{SO}_4 \rightarrow 2\text{CrO}_2\text{Cl}_2 + 2\text{KHSO}_4 + 4\text{NaHSO}_4 + 3\text{H}_2\text{O}$$. The red fumes are chromyl chloride, $$\text{CrO}_2\text{Cl}_2$$.