When a mixture of solid $NaCl$ and solid $K_2Cr_2O_7$ is heated with concentrated $H_2SO_4$,orange-red vapours are evolved. These vapours are of which compound?
- AChromous chloride
- BChromyl chloride
- CChromic chloride
- DChromic sulphate
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The reaction of $K_2Cr_2O_7$ with $NaCl$ and conc. $H_2SO_4$ gives
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