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

Match the catalysts to the correct process. Catalyst Process A. T i C l 3 i. Wacker process B. P d C l 2 ii. Ziegler – Natta polymerisation C. C u C l 2 iii. Contact process` D. V 2 O 5 iv. Deacon’s process

A → i i , B → i , C → i v , D → i i i

A → i i i , B → i , C → i i , D → i v

A → i i i , B → i i , C → i v , D → i

A → i i , B → i i i , C → i v , D → i

MEDIUM

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Give the correct order of initials T or F for the following statements. Use T if the statement is true and F if it is false.

(I) Sulphide ions reacts with ${Na}_{2} [Fe {(CN)}_{5} (NO)]$ to form a purple coloured compound ${Na}_{4} [Fe {(CN)}_{5} (NOS)]$ . In the reaction, the oxidation state of iron changes

(II) $Pt (IV)$ compounds are relatively more stable than $Ni (IV)$ compounds

(III) The welding of magnesium can be done in the atmosphere of helium

(IV) ${LiAlH}_{4}$ on hydrolysis will give $H_{2}$

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Important Questions on Inorganic Chemistry in the Laboratory and in Industry

HARD

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Hydrogen Sulphide

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:

EASY

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Hydrogen Sulphide

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

MEDIUM

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Hydrogen Sulphide

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

EASY

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Hydrogen Sulphide

Match the catalysts to the correct process.

	Catalyst		Process
A.	$T i C l_{3}$	i.	Wacker process
B.	$P d C l_{2}$	ii.	Ziegler – Natta polymerisation
C.	$C u C l_{2}$	iii.	Contact process`
D.	$V_{2} O_{5}$	iv.	Deacon’s process

EASY

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Hydrogen Sulphide

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:

HARD

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Hydrogen Sulphide

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)

MEDIUM

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Hydrogen Sulphide

Which combines with

{Fe}^{2 +}

to form brown complex?

HARD

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Hydrogen Sulphide

The equation which is balanced and represents the correct product(s) is

EASY

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Hydrogen Sulphide

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 :

MEDIUM

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Hydrogen Sulphide

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

MEDIUM

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Hydrogen Sulphide

The pair of metal ions that can give a spin only magnetic moment of

3.9 B M

for the complex

[M {(H_{2} O)}_{6}] C l_{2}

, is:

EASY

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Hydrogen Sulphide

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

EASY

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Hydrogen Sulphide

The transition elements that has the lowest enthalpy of atomisation is:

MEDIUM

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Hydrogen Sulphide

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:

HARD

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Hydrogen Sulphide

Which of the following arrangements does not represent the correct order of the property stated against it?

EASY

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Hydrogen Sulphide

The colour and magnetic nature of manganate ion

({MnO}_{4}^{2 -})

is-

HARD

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Hydrogen Sulphide

Spin only magnetic moment

2 .84 BM

is given by:

(Atomic Number of

Ni =28, Ti =22, Cr =24, Co =27

)

HARD

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Hydrogen Sulphide

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:

MEDIUM

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Hydrogen Sulphide

{HgCl}_{2}

and

I_{2}

both when dissolved in water containing

I^{-}

ions the pair of species formed is:

MEDIUM

Physical Science>Chemistry>Inorganic Chemistry in the Laboratory and in Industry>Hydrogen Sulphide

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

Important Questions on Inorganic Chemistry in the Laboratory and in Industry

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