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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Describe the change in oxidation state of iodine, when potassium permanganate reacts with $KI$ in basic medium.

Important Questions on Transition and Inner Transition Elements

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Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Potassium Dichromate and Potassium Permanganate

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

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Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Potassium Dichromate and Potassium Permanganate

The manganate and permanganate ions are tetrahedral, due to:

EASY

Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Potassium Dichromate and Potassium Permanganate

The ionic charges of manganate and permanganate ion are respectively

EASY

Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Potassium Dichromate and Potassium Permanganate

When dil. sulphuric acid reacts with aqueous solution of potassium chromate, the colour changes from yellow to orange. This shows that

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Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Potassium Dichromate and Potassium Permanganate

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:

EASY

Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Potassium Dichromate and Potassium Permanganate

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

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Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Potassium Dichromate and Potassium Permanganate

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:

MEDIUM

Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Potassium Dichromate and Potassium Permanganate

In tetrahedral permanganate ion

π

bonding type between metal and oxygen is;

EASY

Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Potassium Dichromate and Potassium Permanganate

How many peroxy linkages are present in

C r O_{5}

MEDIUM

Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Potassium Dichromate and Potassium Permanganate

Name the gas that can readily decolourise acidified

{KMnO}_{4}

solution.

EASY

Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Potassium Dichromate and Potassium Permanganate

Aqueous solution of a salt

(A)

forms a dense white precipitate with

{BaCl}_{2}

solution. The precipitate dissolves in dilute

HCl

to produce a gas

(B)

which decolourises acidified

{KMnO}_{4}

solution.

A

and

B

respectively are :

HARD

Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Potassium Dichromate and Potassium Permanganate

Which one of the following statements is correct when

S O_{2}

is passed through acidified

K_{2} C r_{2} O_{7}

solution?

EASY

Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Potassium Dichromate and Potassium Permanganate

A solid

' X'

on reaction with

dil HCl

liberates a gas

' Y'

, which decolorises acidified

{KMnO}_{4}

X, Y

respectively are:

MEDIUM

Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Potassium Dichromate and Potassium Permanganate

A mixture of

NaCl

and

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

is heated with conc.

H_{2} {SO}_{4}

, deep red vapours and formed. Which of the following statement is false ?

EASY

Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Potassium Dichromate and Potassium Permanganate

Which one of the following titrations of permanganate does not give satisfactory results?

EASY

Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Potassium Dichromate and Potassium Permanganate

Treatment of alkaline

{KMnO}_{4}

solution with

KI

solution oxidizes iodide to:-

EASY

Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Potassium Dichromate and Potassium Permanganate

In acidic medium potassium permanganate oxides oxalic acid to;

MEDIUM

Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Potassium Dichromate and Potassium Permanganate

Which of the following is not formed when H₂S reacts with acidic K₂Cr₂O₇ solution ?

MEDIUM

Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Potassium Dichromate and Potassium Permanganate

Which of the following statements is/are false?

MEDIUM

Chemistry>Inorganic Chemistry>Transition and Inner Transition Elements>Potassium Dichromate and Potassium Permanganate

The colour of

K M n O_{4}

is due to: [where

M \to

metal,

L \to

ligand]

Describe the change in oxidation state of iodine, when potassium permanganate reacts with KI in basic medium.

Important Questions on Transition and Inner Transition Elements

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Describe the change in oxidation state of iodine, when potassium permanganate reacts with $KI$ in basic medium.