When potassium dichromate is heated with conc. $H_{2} S O_{4}$ and NaCl, orange vapours are evolved due to

C r O_{2} C l_{2}

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C r C l_{3}

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C l_{2}

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C r O_{5}

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Solution

The correct option is A $C r O_{2} C l_{2}$
$C r O_{2} C l_{2}$ (Chromyl chloride) is formed

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