Beta Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>EXERCISE-2>Q 53

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${BCl}_{3}$ does not exist as dimer but ${BH}_{3}$ exists as dimer $(B_{2} H_{6})$ because:

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Important Questions on The p-Block Elements

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Beta Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>EXERCISE-2>Q 54

Amorphous boron on burning in air forms:

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Beta Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>EXERCISE-2>Q 55

Borax is used as a cleansing agent because on dissolving in water, it gives:

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Beta Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>EXERCISE-2>Q 56

One mole of calcium phosphide on reaction with excess water gives

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Beta Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>EXERCISE-2>Q 58

Select correct statement about

B_{2} H_{6}

-

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Beta Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>EXERCISE-2>Q 59

The solubility of anhydrous

{AlCl}_{3}

and hydrous

{AlCl}_{3}

in diethyl ether are

S_{1}

and

S_{2}

respectively. Then -

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Beta Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>EXERCISE-2>Q 60

H_{3} B O_{3} \overset{T_{1}}{\to} X \overset{T_{2}}{\to} Y \overset{red hot}{\to} B_{2} O_{2}

if

T_{1} < T_{2}

then

X

and

Y

respectively are -

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Beta Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>EXERCISE-2>Q 61

Borax is used as a buffer since:

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Beta Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>EXERCISE-2>Q 62

HI

can be prepared by all the following methods except