Beta Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>EXERCISE-II (Previous Year Questions)>Q 55

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Four successive members of the first row transition elements are listed below with atomic numbers. Which one of them is expected to have the highest
positive $E_{M^{3 +} / M^{2 +}}^{0}$ value?

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Important Questions on The d- and f-Block Elements

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Beta Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>EXERCISE-II (Previous Year Questions)>Q 56

Which of the following metal cation is reduced from its higher oxidation state

(+ 2)

to

(+ 1)

by both

Kl

solution and an excess of

KCN

solution?

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Beta Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>EXERCISE-II (Previous Year Questions)>Q 57

A test tube containing a nitrate, and another containing a bromide and

{MnO}_{2}

, are treated with concentrated

H_{2} {SO}_{4}

. The reddish brown fumes evolved are passed through water. The water will be coloured by:

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Beta Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>EXERCISE-III (Analytical Questions)>Q 1

Highest stable

Mn

fluoride is

{MnF}_{4}

, whereas, highest

Mn

oxide is

{Mn}_{2} O_{7}

due to:

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Beta Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>EXERCISE-III (Analytical Questions)>Q 3

Four successive members of the first-row transition elements are listed below with their atomic numbers. Which one of them is expected to have the highest third ionisation enthalpy?

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Beta Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>EXERCISE-III (Analytical Questions)>Q 4

Which series of reactions correctly represents chemical relations related to iron and its compound

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Beta Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>EXERCISE-III (Analytical Questions)>Q 5

The chromyl chloride vapours are dissolved in water and acetic acid, and barium acetate solution is added, then:

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Beta Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>EXERCISE-III (Analytical Questions)>Q 6

{Cu}^{+}

ion is not stable in aqueous solution, due to-

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Beta Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>EXERCISE-III (Analytical Questions)>Q 15

Assertion : Solution of ${Na}_{2} {CrO}_{4}$ in water is intensely coloured.

Reason : Oxidation state of $Cr$ in ${Na}_{2} {CrO}_{4}$ is $+ VI$ .