Fluorination of an aromatic ring is easily accomplished by treating a diazonium salt with $HBF_4$. Which of the following conditions is correct about this reaction?
A$NaF/Cu$
B$Cu_2O/H_2O$
C
Only heat
D$NaNO_2/Cu$
JEE MAIN 2016, Difficult
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C
Only heat
c
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The determination of $Ph_2C(OH)CH_2NH_2$ with $NaNO_2 - HCl$ gives a product $(P)$ which on oxidation gives benzoic acid only Identify the product $(P)$
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