Which of the following statements are correct when a mixture of \( ...

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Which of the following statements are correct when a mixture of \( \mathrm{NaCl} \) and \( \mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7} \) is gently warmed with conc.
\( \mathrm{P} \) \( \mathrm{H}_{2} \mathrm{SO}_{4} \) ?
(A) Deep red vapours are liberated
W
(B) Deep red vapours dissolve in \( \mathrm{NaOH} \) (aq.)forming a yellow solution.
(C) Greenish yellow gas is liberated
(D) Deep red vapours dissolve in water forming yellow solution
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