Identify A, B and C in the given below reaction sequence:
\( \mathrm{PbCl_2, \, Pb(SO_4)_2, \, PbCrO_4} \)
\( \mathrm{PbS, \, PbSO_4, \, Pb(CH_3COO)_2} \)
\( \mathrm{PbCl_2, \, PbSO_4, \, PbCrO_4} \)
\( \mathrm{PbS, \, PbSO_4, \, PbCrO_4} \)
Among the following cations, the number of cations which will give characteristic precipitate in their identification tests with \( \mathrm{K_4[Fe(CN)_6]} \) is ________.\( \mathrm{Cu^{2+},\ Fe^{3+},\ Ba^{2+},\ Ca^{2+},\ NH_4^{+},\ Mg^{2+},\ Zn^{2+}} \)
Identify the inorganic sulphides that are yellow in colour:(A) \( (\mathrm{NH}_4)_2\mathrm{S} \)(B) \( \mathrm{PbS} \)(C) \( \mathrm{CuS} \)(D) \( \mathrm{As}_2\mathrm{S}_3 \)(E) \( \mathrm{As}_2\mathrm{S}_5 \)Choose the correct answer from the options given below:
