\( A \) and \( B \) are two salts. \( A \) with dilute \( \mathrm{HCl} \) and \( B \) with conc....
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0\( A \) and \( B \) are two salts. \( A \) with dilute \( \mathrm{HCl} \) and \( B \) with conc. \( \mathrm{H}_{2} \mathrm{SO}_{4} \) react to give reddish brown vapours, hence \( A \) and \( B \) respectively are:
(A) \( \mathrm{NaBr}, \mathrm{NaNO}_{3} \)
(B) \( \mathrm{NaNO}_{3}, \mathrm{NaBr} \)
(C) \( \mathrm{NaBr}, \mathrm{NaNO}_{2} \)
(D) \( \mathrm{NaNO}_{2}, \mathrm{NaBr} \)
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