# In III gp of salt analysis for cations $N{H}_{4}CL$ and $N{H}_{4}OH$ are added as group reagents. Which of the following can be used instead of $N{H}_{4}CL$ ?

$N{H}_{4}N{O}_{3}$

NaCL

${\left(N{H}_{4}\right)}_{2}S{O}_{4}$

${\left(N{H}_{4}\right)}_{2}{C}_{2}{O}_{4}$

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