Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry 2 NEET>Chapter 3 - d-Block and f-Block Elements>TOPICWISE QUESTIONS>Q 62

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NEET

IMPORTANT

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Which of the following sodium salts, on heating with solid $K_{2} {Cr}_{2} O_{7}$ and concentrated $H_{2} {SO}_{4}$ , gives red vapour?

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Important Questions on d-Block and f-Block Elements

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NEET

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry 2 NEET>Chapter 3 - d-Block and f-Block Elements>TOPICWISE QUESTIONS>Q 63

At

pH = 11, {Cr}_{2} {O_{7}}^{2 -}

changes to:

HARD

NEET

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry 2 NEET>Chapter 3 - d-Block and f-Block Elements>TOPICWISE QUESTIONS>Q 64

A compound

X

reacts with rubidium chloride in the presence of an acid to give orange-red fumes of

Y

. Then

X

and

Y

respectively, are:

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NEET

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry 2 NEET>Chapter 3 - d-Block and f-Block Elements>TOPICWISE QUESTIONS>Q 65

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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IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry 2 NEET>Chapter 3 - d-Block and f-Block Elements>TOPICWISE QUESTIONS>Q 66

$A$ and $B$ in the following reaction, respectively, are:

$K_{2} {Cr}_{2} O_{7} + HCl \to KCl + A + B + H_{2} O$

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IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry 2 NEET>Chapter 3 - d-Block and f-Block Elements>TOPICWISE QUESTIONS>Q 67

Which is correct statement for

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

?

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NEET

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry 2 NEET>Chapter 3 - d-Block and f-Block Elements>TOPICWISE QUESTIONS>Q 68

Acidic

{KMnO}_{4}

can be used for volumetric analysis of

{Fe}^{2 +}

salt solution. Which of the following can be used to provide an acidic medium in this reaction?

MEDIUM

NEET

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry 2 NEET>Chapter 3 - d-Block and f-Block Elements>TOPICWISE QUESTIONS>Q 69

Which of the following reactions involves oxidation of sulphur of mentioned compound?

EASY

NEET

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Inorganic Chemistry 2 NEET>Chapter 3 - d-Block and f-Block Elements>TOPICWISE QUESTIONS>Q 70

The number of chromium-oxygen bonds (Sigma as well as pi) formed by one chromium atom in dichromate ion

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

is [Ignore Back Bonding]?