Passing $\mathrm{H}{}_2\mathrm{S}$ through a dilute-acid solution of $\mathrm{Cd}{}^{2+}$ gives a precipitate of colour

More questions on Group I and group II cations (Pb, Cu, Bi, Cd, As, Sb, Sn)

• In a Marsh-type test, 0.396 g of As2O3 (As 75, O 16) is reduced by zinc and acid: As2O3 + 6Zn + 12H+ -> 2AsH3 + 6Zn^2+ + 3H2O. Taking the mo... JEE Advanced level
• Among the following cations, the one that is precipitated as its chloride by dilute HCl in the systematic analysis is NEET level
• When H2S is passed through a solution of CuSO4 acidified with dilute HCl, the precipitate formed is NEET level
• The deep blue colour obtained when excess aqueous ammonia is added to a Cu^2+ salt solution is due to the ion NEET level
• Assertion (A): Pb^2+ can be found in both group I and group II of the cation scheme. Reason (R): PbCl2 is appreciably soluble in cold water ... JEE Main level
• In the presence of 0.3 M HCl, H2S precipitates CuS but not ZnS. The correct reason is JEE Main level