Cation analysis

A salt with few drops of conc. HCl gives apple green colour in flame test. The group precipitate of the salt is dissolved in acetic acid and treated with $\ce{K2CrO4}$ to give yellow precipitate. When the sodium carbonate extract of the salt solution is heated with conc. $\ce{HNO3}$ and ammonium molybdate, it resulted a canary yellow precipitate. The cation and anion present in the salt are respectively,

Among $\ce{Fe^{3+}}$, $\ce{Pb^{2+}}$, $\ce{Cu^{2+}}$ and $\ce{Mn^{2+}}$, identify the one that gets precipitated out while passing $\ce{H2S}$ in presence of $\ce{NH4OH}$ as group reagent. The highest possible oxidation state of the corresponding metal is

The correct match of the group reagents in List-I for precipitating the metal ion given in List-II from solutions, is

The number of zinc ions present in the molecular formula of Q is _____.

In the scheme given below, X and Y, respectively, are

During the qualitative analysis of salt with cation $y^{2+}$, addition of a reagent (X) to alkaline solution of the salt gives a bright red precipitate. The reagent (X) and the cation ($y^{2+}$) present respectively are :

$\mathrm{Fe^{3+}}$ cation gives a prussian blue precipitate on addition of potassium ferrocyanide solution due to the formation of :

A mixture of two salts is used to prepare a solution $\mathbf S$, which gives the following results:

• $\mathbf S$ (aq solution of the salts) + dilute NaOH(aq), room temperature → white precipitate(s) only
• $\mathbf S$ + dilute HCl(aq), room temperature → white precipitate(s) only

The correct option(s) for the salt mixture is(are)

Precipitate $\mathbf X$ is

A colorless aqueous solution contains nitrates of two metals, X and Y. When it was added to an aqueous solution of NaCl, a white precipitate was formed. This precipitate was found to be partly soluble in hot water to give a residue P and a solution Q. The residue P was soluble in aq. $\ce{NH3}$ and also in excess sodium thiosulfate. The hot solution Q gave a yellow precipitate with KI. The metals X and Y, respectively, are

The correct option(s) to distinguish nitrate salts of $\mathrm{Mn^{2+}}$ and $\mathrm{Cu^{2+}}$ taken separately is (are)

A metal 'M' reacts with nitrogen gas to afford '$\ce{M3N}$'. '$\ce{M3N}$' on heating at high temperature gives back 'M' and on reaction with water produces a gas 'B'. Gas 'B' reacts with aqueous solution of $\ce{CuSO4}$ to form a deep blue compound. 'M' and 'B' respectively are :

A solution containing a group-IV cation gives a precipitate on passing $\ce{H2S}$. A solution of this precipitate in dil.HCl produces a white precipitate with NaOH solution and bluish-white precipitate with basic potassium ferrocyanide. The cation is :

The pair(s) of ions where BOTH the ions are precipitated upon passing $\ce{H2S}$ gas in presence of dilute HCl, is(are)

Which of the following compounds is not colored yellow ?

An aqueous solution of a salt X turns blood red on treatment with $\ce{SCN-}$ and blue on treatment with $\ce{K4[Fe(CN)6]}$. X also gives a positive chromyl chloride test. The salt X is :

The cation that will not be precipitated by $\ce{H2S}$ in the presence of dil HCl is :

A pink coloured salt turns blue on heating. The presence of which cation is most likely ?

Among PbS, CuS, HgS, MnS, $\ce{Ag2S}$, NiS, CoS, $\ce{Bi2S3}$ and $\ce{SnS2}$, the total number of BLACK coloured sulfides is

Reagent S is