\( \mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7} \) की \( \mathrm{NaCl} \) तथा सान्द्र \( \mathr...

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\( \mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7} \) की \( \mathrm{NaCl} \) तथा सान्द्र \( \mathrm{H}_{2} \mathrm{SO}_{4} \) से अभिक्रिया देती है :
(A) \( \mathrm{CrO}_{2} \mathrm{Cl}_{2} \)
(B) \( \mathrm{CrCl}_{3} \)
(C) \( \mathrm{Cr}_{2} \mathrm{O}_{3} \)
(D) \( \mathrm{CrOCl}_{2} \)
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