Match List I with List II. List-I (Anion) List-II (gas evolved on reaction with dil. H 2 SO 4 ) (A) CO 3 2 - (I) Colourless gas which turns lead acetate paper black. (B) S 2 - (II) Colourless gas which turns acidified potassium dichromate solution green. (C) SO 3 2 - (III) Brown fumes which turns acidified KI solution containing starch blue. (D) NO 2 - (IV) Colourless gas evolved with brisk effervescence, which turns lime water milky. Choose the correct answer from the options given below

A - IV , B - I , C - II , D - III

A - III , B - I , C - II , D - IV

A - II , B - I , C - IV , D - III

A - IV , B - I , C - III , D - II

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Neutral ferric chloride is added to the aqueous solution of acetate ion. The blood-red colour obtained is due to the formation of:

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Important Questions on Theoretical Principles of Experimental Chemistry

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

A white sodium salt dissolves readily in water to give a solution which is neutral to litmus. When silver nitrate solution is added to the before mentioned solution, a white precipitate is obtained which does not dissolve in dilute nitric acid. The anion is:

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In the detection of II group acid radical, the salt containing chloride is treated with concentrated sulphuric acid, the colourless gas is liberated. The name of the gas is

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

A white precipitate was formed when

{BaCl}_{2}

was added to water extract of an inorganic salt. Further, a gas

' X'

with characteristic odour was released when the formed white precipitate was dissolved in dilute HCI. The anion present in the inorganic salt is:

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

When treated with conc.

HCl, {MnO}_{2}

yields gas

(X)

which further reacts with

Ca {(OH)}_{2}

to generate a white solid

(Y)

reacts with dil.

HCl

to produce the same gas

X .

the solid

Y

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

On heating, lead (ll) nitrate gives a brown gas (A). The gas (A) on cooling changes to a colourless solid/liquid (B). (B) on heating with NO changes to ablue solid (C). The oxidation number of nitrogen in solid (C) is:

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

Which combines with

{Fe}^{2 +}

to form brown complex?

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

Match List I with List II.

	List-I (Anion)		List-II (gas evolved on reaction with dil. $H_{2} {SO}_{4}$ )
(A)	${CO}_{3}^{2 -}$	(I)	Colourless gas which turns lead acetate paper black.
(B)	$S^{2 -}$	(II)	Colourless gas which turns acidified potassium dichromate solution green.
(C)	${SO}_{3}^{2 -}$	(III)	Brown fumes which turns acidified KI solution containing starch blue.
(D)	${NO}_{2}^{-}$	(IV)	Colourless gas evolved with brisk effervescence, which turns lime water milky.

Choose the correct answer from the options given below

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

When a mixture of

NaCl, K_{2} {Cr}_{2} O_{7}

and concentrated

H_{2} {SO}_{4}

is heated in a dry test tube, a red vapour

(X)

is evolved. This vapour

(X)

turns an aqueous solution of

NaOH

yellow due to the formation of

Y . X

and

Y,

respectively, are:

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

Reaction of an inorganic sulphite

X

with dilute

H_{2} {SO}_{4}

generated compound

Y

. Reaction of

Y

with

NaOH

gives

X

. Further, the reaction of

X

with

Y

and water affords compound

Z, Y

and

X

, respectively, are :

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

Sodium nitroprusside, when added to an alkaline solution of sulphide ions, produce a

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

The sodium salt of an organic acid

X

produces effervescence with concentrated

H_{2} {SO}_{4}

X

reacts with the acidified aqueous

{CaCl}_{2}

solution to give a white precipitate which decolourises acidic solution of

{KMnO}_{4}

X

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

{HgCl}_{2}

and

I_{2}

both when dissolved in water containing

I^{-}

ions the pair of species formed is:

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

The reagent(s) that can selectively precipitate

S^{2 -}

from a mixture of

S^{2 -}

and

S O_{4}^{2 -}

in aqueous solution is (are)

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

Some reactions are given for salt(X).

Which of the following salt can be satisfied all the conditions?

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

Nitrite

({N O}_{2}^{-})

interferes in the 'ring-test' of nitrates

({N O}_{3}^{-})

. Among the following reagent(s) that can be used for the removal of nitrite is/are

I.

{N H}_{4} C l

II.

{({N H}_{2})}_{2} C S

(Thiourea)

III.

{N H}_{2} {S O}_{3} H

(Sulphamic acid)

Correct choice is

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

Select the incorrect statement.

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

When NaCl, is heated with solid K₂Cr₂O₇ & Conc. H₂SO₄ the vapours obtained is

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

Corrosive sublimate

(H g {Cl}_{2})

can be used to distinguish between:

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

Gas

Y + B ⟶ Milkiness

Gas X burns with blue flame. Mark the correct choice.

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

Brown ring is made for

Neutral ferric chloride is added to the aqueous solution of acetate ion. The blood-red colour obtained is due to the formation of:

Important Questions on Theoretical Principles of Experimental Chemistry

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