X → KOH Y (gas turns red litmus blue) + Z → Zn + KOH Y (gas) . X → Δ gas (does not support combustion) Identify (X) to (Z):

X = NH 4 NO 2 Y = NH 3 Z = KNO 2

X = ( NH 4 ) 2 Cr 2 O 7 Y = NH 3 Z = Cr 2 O 3

X = ( NH 4 ) 2 SO 4 Y = NH 3 Z = K 2 SO 4

X = NH 4 NO 3 Y = NH 3 Z = KNO 3

X → KOH Y (gas turns red litmus blue) + Z → Zn + KOH Y (gas) . X → Δ gas (does not support combustion) Identify (X) to (Z):

X = NH 4 NO 2 Y = NH 3 Z = KNO 2

Match List - I with List - II : List - I (Metal ion) List - II (Group in Qualitative analysis) (a) Mn 2 + (i) Group - III (b) As 3 + (ii) Group - IIA (c) Cu 2 + (iii) Group - IV (d) Al 3 + (iv) Group - IIB Choose the most appropriate answer from the options given below :

(a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)

(a)-(iv), (b)-(ii), (c)-(iii), (d)-(i)

(a)-(i), (b)-(iv), (c)-(ii), (d)-(iii)

(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)

Match the List-I with List-II : Cations Group reaction P → Pb 2 + , Cu 2 + H 2 S gas in presence of dilute HCl Q → Al 3 + , Fe 3 + NH 4 2 CO 3 in presence of NH 4 OH R → Co 2 + , Ni 2 + NH 4 OH in presence of NH 4 CI S → Ba 2 + , Ca 2 + H 2 S in presence of NH 4 OH

P → i , Q → iii , R → iv , S → ii

P → i , Q → iii , R → ii , S → iv

P → iv , Q → ii , R → iii , S → i

P → iii , Q → i , R → iv , S → ii

HARD

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$(X) \overset{KOH}{\to} (Y) (gas turns red litmus blue) + (Z) \overset{Zn + KOH}{\to} (Y) (gas) .$

$(X) \overset{Δ}{\to} gas (does not support combustion)$

Identify (X) to (Z):

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Important Questions on Theoretical Principles of Experimental Chemistry

EASY

Chemistry>Inorganic Chemistry>Theoretical Principles of Experimental Chemistry>Systematic Analysis of Cationic Radicals

Which one of the following compounds is not a yellow colored compound ?

MEDIUM

Chemistry>Inorganic Chemistry>Theoretical Principles of Experimental Chemistry>Systematic Analysis of Cationic Radicals

When

H_{2} S

gas is passed into a mixture of

{Mn}^{2 +}, {Ni}^{2 +}, {Cu}^{2 +}

and

{Hg}^{2 +}

ion in an acidified aqueous solution, the precipitates formed are

EASY

Chemistry>Inorganic Chemistry>Theoretical Principles of Experimental Chemistry>Systematic Analysis of Cationic Radicals

To an aqueous solution containing ions such as

{Al}^{3 +}, {Zn}^{2 +}, {Ca}^{2 +}, {Fe}^{3 +}, {Ni}^{2 +}, {Ba}^{2 +}

and

{Cu}^{2 +}

was added

conc . HCl

, followed by

H_{2} S

. The total number of cations precipitated during this reaction is/are :

EASY

Chemistry>Inorganic Chemistry>Theoretical Principles of Experimental Chemistry>Systematic Analysis of Cationic Radicals

Match List - I with List - II :

	List - I (Metal ion)		List - II (Group in Qualitative analysis)
(a)	${Mn}^{2 +}$	(i)	Group - III
(b)	${As}^{3 +}$	(ii)	Group - IIA
(c)	${Cu}^{2 +}$	(iii)	Group - IV
(d)	${Al}^{3 +}$	(iv)	Group - IIB

Choose the most appropriate answer from the options given below :

HARD

Chemistry>Inorganic Chemistry>Theoretical Principles of Experimental Chemistry>Systematic Analysis of Cationic Radicals

A solution containing a group

- IV

cation gives a precipitate on passing

H_{2} S .

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

MEDIUM

Chemistry>Inorganic Chemistry>Theoretical Principles of Experimental Chemistry>Systematic Analysis of Cationic Radicals

Consider the sulphides

HgS, PbS, CuS, {Sb}_{2} S_{3}, {As}_{2} S_{3}

and

CdS .

Number of these sulphides soluble in

50 % {HNO}_{3}

is ___________ .

MEDIUM

Chemistry>Inorganic Chemistry>Theoretical Principles of Experimental Chemistry>Systematic Analysis of Cationic Radicals

{PbO}_{2}

is obtained from

MEDIUM

Chemistry>Inorganic Chemistry>Theoretical Principles of Experimental Chemistry>Systematic Analysis of Cationic Radicals

{Fe}^{3 +}

cation gives a prussian blue precipitate on addition of potassium ferrocyanide solution due to the formation of

MEDIUM

Chemistry>Inorganic Chemistry>Theoretical Principles of Experimental Chemistry>Systematic Analysis of Cationic Radicals

When

H_{2} S

gas is passed through a hot acidic aqueous solution containing

{Al}^{3 +}, {Cu}^{2 +}, {Pb}^{2 +}

and

{Ni}^{2 +},

a precipitate is formed which consists of

MEDIUM

Chemistry>Inorganic Chemistry>Theoretical Principles of Experimental Chemistry>Systematic Analysis of Cationic Radicals

For the following Assertion and Reason, the correct option is

Assertion (A) : When $Cu$ (II) and sulphide ions are mixed, they react together extremely quickly to give a solid.

Reason (R) : The equilibrium constant of ${Cu}^{2 +} (aq) + S^{2 -} (aq) ⇌ CuS (s)$ is high because the solubility product is low.

EASY

Chemistry>Inorganic Chemistry>Theoretical Principles of Experimental Chemistry>Systematic Analysis of Cationic Radicals

The Nessler's reagent contains

MEDIUM

Chemistry>Inorganic Chemistry>Theoretical Principles of Experimental Chemistry>Systematic Analysis of Cationic Radicals

The incorrect statement is:

MEDIUM

Chemistry>Inorganic Chemistry>Theoretical Principles of Experimental Chemistry>Systematic Analysis of Cationic Radicals

Question Image

What are $A, B, C, D$ ?

HARD

Chemistry>Inorganic Chemistry>Theoretical Principles of Experimental Chemistry>Systematic Analysis of Cationic Radicals

Acidic ferric chloride solution on treatment with excess of potassium ferrocyanide gives a Prussian blue coloured colloidal species. It is:

MEDIUM

Chemistry>Inorganic Chemistry>Theoretical Principles of Experimental Chemistry>Systematic Analysis of Cationic Radicals

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 :

EASY

Chemistry>Inorganic Chemistry>Theoretical Principles of Experimental Chemistry>Systematic Analysis of Cationic Radicals

Match the List-I with List-II :

Cations	Group reaction
$P \to {Pb}^{2 +}, {Cu}^{2 +}$	$H_{2} S$ gas in presence of dilute $HCl$
$Q \to {Al}^{3 +}, {Fe}^{3 +}$	${({NH}_{4})}_{2} {CO}_{3}$ in presence of ${NH}_{4} OH$
$R \to {Co}^{2 +}, {Ni}^{2 +}$	${NH}_{4} OH$ in presence of ${NH}_{4} CI$
$S \to {Ba}^{2 +}, {Ca}^{2 +}$	$H_{2} S$ in presence of ${NH}_{4} OH$

HARD

Chemistry>Inorganic Chemistry>Theoretical Principles of Experimental Chemistry>Systematic Analysis of Cationic Radicals

The reaction of

Pb {({NO}_{3})}_{2}

and

NaCl

in water produces a precipitate that dissolves upon the addition of

HCl

of appropriate concentration. The dissolution of the precipitate is due to the formation of

MEDIUM

Chemistry>Inorganic Chemistry>Theoretical Principles of Experimental Chemistry>Systematic Analysis of Cationic Radicals

Copper sulphate solution reacts with

KCN

to give

MEDIUM

Chemistry>Inorganic Chemistry>Theoretical Principles of Experimental Chemistry>Systematic Analysis of Cationic Radicals

Upon treatment with ammoniacal

H_{2} S

, the metal ion that precipitates as a sulphide is

MEDIUM

Chemistry>Inorganic Chemistry>Theoretical Principles of Experimental Chemistry>Systematic Analysis of Cationic Radicals

The cation that will not be precipitated by

H_{2} S

in the presence of dil HCl is:

X → KOH Y (gas turns red litmus blue) + Z → Zn + KOH Y (gas) . X → Δ gas (does not support combustion) Identify (X) to (Z):

Important Questions on Theoretical Principles of Experimental Chemistry

Learn and Prepare for any exam you want !

$(X) \overset{KOH}{\to} (Y) (gas turns red litmus blue) + (Z) \overset{Zn + KOH}{\to} (Y) (gas) .$

$(X) \overset{Δ}{\to} gas (does not support combustion)$

Identify (X) to (Z):