Which of the following statements is incorrec | vedclass

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(C) $1$. In the analysis of basic radicals,the group reagent for group-$IV$ is $H_2S$ in the presence of $NH_4OH$ and $NH_4Cl$. The statement in optio

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Both $(A)$ and $(B)$

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(C) $1$. In the analysis of basic radicals,the group reagent for group-$IV$ is $H_2S$ in the presence of $NH_4OH$ and $NH_4Cl$. The statement in option $(A)$ is incomplete as it omits $H_2S$,but it is generally considered incorrect in the context of standard qualitative analysis reagents.$2$. $dil. H_2SO_4$ is a non-oxidizing acid. It reacts with $NaBr$ to produce $HBr$ gas,which is colorless. Brown fumes of $Br_2$ are produced only when $conc. H_2SO_4$ (an oxidizing agent) is used. Thus,statement $(B)$ is incorrect.$3$. Since both statements are scientifically inaccurate or incomplete,the correct choice is $(C)$.

Column-$I$	Column-$II$
$(i)$ Ammonium phosphomolybdate	$(a)$ $(NH_4)_2MoO_4$
$(ii)$ Ammonium phosphate	$(b)$ $Mg^{2+} + NH_4OH$
$(iii)$ Mixture of magnesia	$(c)$ $H_3PO_4$
$(iv)$ Ammonium molybdate	$(d)$ $(NH_4)_3PO_4$
$(v)$ Phosphoric acid	$(e)$ $(NH_4)_3PO_4 \cdot 12MoO_3$

Which of the following statements is incorrect?

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