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अभिक्रिया `ArNH_(2) underset(" ठण्डी अवस्थाएँ ")overset(NaNO_(2)+HCl)rarr A overset(CuBr)rarrB` में , यौगिक B है -A. `Ar-Br`B. `Ar-NO_(2)`C. `Ar-Cl`D. `Ar-Ar` |
| Answer» Correct Answer - A | |