CHEMISTRY(KCET)
285614
In the reaction:
\(\mathrm{P}, \mathrm{Q}\) and R respectively are:
1 \(\mathrm{NaNO}_2+\) dil. \(\mathrm{HCl}, \mathrm{HBF}_4, \mathrm{Cu}+\mathrm{NaNO}_2\)
2 \(\mathrm{NaNO}_2+\) con. \(\mathrm{HCl}, \mathrm{F}_2, \mathrm{Cu}+\mathrm{NaNO}_3\)
3 \(\mathrm{NaNO}_2+\) dil. \(\mathrm{HCl}, \mathrm{BF}_3, \mathrm{Cu}+\mathrm{NaNO}_2\)
4 \(\mathrm{NaNO}_3+\) dil. \(\mathrm{HCl}, \mathrm{F}_2, \mathrm{Cu}+\mathrm{NaNO}_3\)