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Which of the following statement (s) is ...

Which of the following statement (s) is (are) correct when a mixture of NaCl and `K_(2)Cr_(2)O_(7)` is gently warmed with conc. `H_(2)SO_(4)` ?

A

A deep red vapour is evolved

B

the vapour when passed into NaOH solution gives a yellow solution of `Na_(2)CrO_(4)`

C

Chlorine gas is evolved

D

Chromyl chloride is formed

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