Chemistry Crash Course JEE Main>Chapter 27 - The d- and f-block Elements>Level 2>Q 21

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The oxide formed in the maximum oxidation state is ${ZrO}_{x}$ . Then, $x$ is

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Important Questions on The d- and f-block Elements

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Chemistry Crash Course JEE Main>Chapter 27 - The d- and f-block Elements>Level 2>Q 22

The incorrect statement about ${Cr}^{2 +}$ and ${Mn}^{3 +}$ is/are (Atomic number $Cr = 24, Mn = 25$ ).

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Chemistry Crash Course JEE Main>Chapter 27 - The d- and f-block Elements>Level 2>Q 23

The equivalent weight of potassium permanganate, when it acts as an oxidizing agent in acidic medium, is:

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Chemistry Crash Course JEE Main>Chapter 27 - The d- and f-block Elements>Level 2>Q 24

Which of the following species has oxygen in

- 1

oxidation state?

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Chemistry Crash Course JEE Main>Chapter 27 - The d- and f-block Elements>Level 2>Q 25

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

solution turns green when

{Na}_{2} {SO}_{3}

is added to it in the presence of an acid due to:

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Chemistry Crash Course JEE Main>Chapter 27 - The d- and f-block Elements>Level 2>Q 26

Which is correct statement for

{Cr}_{2} O_{7}^{2 -}

?

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Chemistry Crash Course JEE Main>Chapter 27 - The d- and f-block Elements>Level 2>Q 27

{KMnO}_{4}

acts as an oxidizing agent in alkaline medium. When alkaline

{KMnO}_{4}

is treated with

KI

, iodide ion is oxidized to

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Chemistry Crash Course JEE Main>Chapter 27 - The d- and f-block Elements>Level 2>Q 28

Element used in cancer treatment is

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Chemistry Crash Course JEE Main>Chapter 27 - The d- and f-block Elements>Level 2>Q 29

Which of the following statements is not correct regarding lanthanides and actinides?