Gamma Question Bank for Medical Chemistry>Chapter 22 - The d and f-Block Elements>Assignment Set-2>SECTION - B

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The coloured product obtained on reaction of ferrous chromate with sodium carbonate in free access of air is

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Important Questions on The d and f-Block Elements

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Gamma Question Bank for Medical Chemistry>Chapter 22 - The d and f-Block Elements>Assignment Set-2>SECTION - B

The transition metals form a large number of complex compounds due to

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Gamma Question Bank for Medical Chemistry>Chapter 22 - The d and f-Block Elements>Assignment Set-2>SECTION - B

Consider the following statements.
(i)

Zr

and

Hf

have almost identical radii
(ii)

{Ce}^{4 +}

is a strong reductant
(iii)

Ln

(lanthanoids) combine with nitrogen and form

{LnN}_{3}

The correct statement(s) is/are

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Gamma Question Bank for Medical Chemistry>Chapter 22 - The d and f-Block Elements>Assignment>SECTION - A

Coinage metals are

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Gamma Question Bank for Medical Chemistry>Chapter 22 - The d and f-Block Elements>Assignment>SECTION - A

Pyrolusite is used to prepare potassium permanganate ${MnO}_{2} \overset{X}{⟶} {MnO}_{4}^{- 2} \overset{Y}{⟶} {MnO}_{4}^{-}$

$X$ and $Y$ are

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Gamma Question Bank for Medical Chemistry>Chapter 22 - The d and f-Block Elements>Assignment>SECTION - A

Which one of the following exhibits highest oxidation state?

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Gamma Question Bank for Medical Chemistry>Chapter 22 - The d and f-Block Elements>Assignment>SECTION - A

A purple coloured solution is made alkaline with

KOH

and is treated with

KI

forming potassium iodate. The same solution is acidified with

H_{2} {SO}_{4}

and again it is treated with

KI .

However this time instead of potassium iodate, iodine gas is released. The purple coloured solution is of

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Gamma Question Bank for Medical Chemistry>Chapter 22 - The d and f-Block Elements>Assignment>SECTION - A

Acidified solution of chromic acid on treatment with H₂O₂ gives blue colour which is due to:

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Gamma Question Bank for Medical Chemistry>Chapter 22 - The d and f-Block Elements>Assignment>SECTION - A

What are the species

X

and

Y

in the following?

X + H_{2} O ⟶ H_{2} {Cr}_{2} O_{7} \overset{{OH}^{-}}{⟶} Y