Consider the following reactions (unbalanced) Z n + H o t c o n c . H 2 S O 4 → G + R + X Z n + c o n c . N a O H → T + Q G + H 2 S + N H 4 O H → Z a p r e c i p i t a t e + X + Y Choose the correct option(s).

The oxidation state of Z n in T is + 1

The colour of K M n O 4 is due to: [where M → metal, L → ligand]

L → M charge transfer transition

M → L charge transfer transition

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Ferrous sulphate $(F e S O_{4} . 7 H_{2} O)$ is known as

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Important Questions on The d- and f-Block Elements

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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>Important Properties of Compounds of Iron

Consider the following reactions (unbalanced)

Z n + H o t c o n c . H_{2} S O_{4} \to G + R + X

Z n + c o n c . N a O H \to T + Q

G + H_{2} S + {N H}_{4} O H \to Z (a p r e c i p i t a t e) + X + Y

Choose the correct option(s).

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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>Important Properties of Compounds of Iron

Fusion of

M n O_{2}

with

K O H

in presence of

O_{2}

produces a salt

W .

Alkaline solution of

W

upon electrolytic oxidation yields another salt

X .

The manganese containing ions present in

W

and

X,

respectively, are

Y

and

Z .

Correct statement(s) is (are)

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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>Important Properties of Compounds of Iron

The manganate and permanganate ions are tetrahedral, due to:

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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>Important Properties of Compounds of Iron

When a mixture of manganese dioxide, potassium hydroxide and potassium chlorate is fused, the product obtained is

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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>Important Properties of Compounds of Iron

M n O_{2}

when fused with

K O H

and oxidized in air gives a dark green compound

X .

In acidic solution,

X

undergoes disproportionation to give an intense purple compound

Y

and

M n O_{2} .

The compounds

X

and

Y,

respectively, are

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>Important Properties of Compounds of Iron

The ionic charges of manganate and permanganate ion are respectively

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>Important Properties of Compounds of Iron

The number of water molecules not coordinated to copper ion directly in

C u S O_{4} \cdot 5 H_{2} O,

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>Important Properties of Compounds of Iron

Acidified potassium dichromate is treated with hydrogen sulphide. In the reaction, the oxidation number of chromium

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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>Important Properties of Compounds of Iron

Aqueous solution of metallic nitrate

X

reacts with

N H_{4} O H

to form Y which dissolves in excess

N H_{4} O H

. The resulting complex is reduced by acetaldehyde to deposit the metal.

X

and

Y

respectively, are

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>Important Properties of Compounds of Iron

In alkaline medium, the reaction of hydrogen peroxide with potassium permanganate produces a compound in which the oxidation state of

M n

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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>Important Properties of Compounds of Iron

A metal

(A)

on heating in nitrogen gas gives compound

B .

B

on treatment with

H_{2} O

gives a colourless gas which when passed through

C u S O_{4}

solution gives a dark blue-violet coloured solution.

A

and

B

respectively, are:

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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>Important Properties of Compounds of Iron

When

X O_{2}

is fused with an alkali metal hydroxide in presence of an oxidizing agent such as

{KNO}_{3}

; a dark green product is formed which disproportionate in acidic solution to afford a dark purple solution.

X

is:

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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>Important Properties of Compounds of Iron

The incorrect statement is:

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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>Important Properties of Compounds of Iron

Thermal decomposition of a Mn compound

(X)

513 K

results in compound

Y,

M n O_{2}

and a gaseous product.

M n O_{2}

reacts with

N a C l

and concentrated

H_{2} S O_{4}

to give a pungent gas

Z

X, Y

and

Z,

respectively, are:

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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>Important Properties of Compounds of Iron

Aqua regia is used for dissolving noble metals (Au, Pt, etc.). The gas evolved in this process is

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>Important Properties of Compounds of Iron

Which of the following is called "Lunar Caustic"?

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>Important Properties of Compounds of Iron

An aqueous solution consists of

{Pb}^{2 +}

and

{Cu}^{2 +}

ions. Which of the following reagents is suitable for separating them?

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>Important Properties of Compounds of Iron

Which of the following combinations will produce

H_{2}

gas?

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>Important Properties of Compounds of Iron

How many peroxy linkages are present in

C r O_{5}

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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>Important Properties of Compounds of Iron

The colour of

K M n O_{4}

is due to: [where

M \to

metal,

L \to

ligand]

Ferrous sulphate (FeSO4.7H2O) is known as

Important Questions on The d- and f-Block Elements

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Ferrous sulphate $(F e S O_{4} . 7 H_{2} O)$ is known as