Alpha Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>Exercise-1>Q 140

HARD

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IMPORTANT

Earn 100

Write the oxyacids of the following:

Oxide Oxyacids

$N_{2} O_{3}$

${NO}_{2} / N_{2} O_{4}$

$N_{2} O_{5}$

$P_{4} O_{6}$

$P_{4} O_{10}$

Important Questions on The p-Block Elements

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>Exercise-1>Q 141

N_{2}, CO, {CN}^{-},

and

{NO}^{+}

are isoelectronic, but the first one is chemically inert while the latter three are very reactive, why?

EASY

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>Exercise-1>Q 142

On moving down the group from

H_{2} O

to

H_{2} Te

acidic strength increases, why?

EASY

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>Exercise-1>Q 143

What happens when barium azide is heated?

HARD

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>Exercise-1>Q 144

Which stable elements of

15^{th}

and

16^{th}

group do not react with water under normal conditions?

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>Exercise-1>Q 145

Chemiluminescence is a phenomenon in which on element glows in dark when exposed to moisture. Which element of

15^{th}

group shows this phenomenon?

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>Exercise-1>Q 149

On being slowly passed through water,

{PH}_{3}

forms bubbles but

{NH}_{3}

dissolves. Why is it so?

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>Exercise-1>Q 155

In the manufacture of sulphuric acid by the contact process, sulphur trioxide is not directly dissolved in water. Why?

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>Exercise-1>Q 156

How are

{SO}_{2} {Cl}_{2}, {SO}_{2}

and

{SO}_{2}

obtained from sulphuric acid?