Chemistry Crash Course NEET>Chapter 18 - The p-Block Elements>Level 1>Q 136

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IMPORTANT

Earn 100

Assertion: ${PbO}_{2}$ is an oxidising agent and reduced to $PbO$ .

Reason: Stability of $Pb (II) > Pb (IV)$ on account of inert pair effect.

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Important Questions on The p-Block Elements

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Chemistry Crash Course NEET>Chapter 18 - The p-Block Elements>Level 1>Q 137

All the products formed in the oxidation of

{NaBH}_{4}

by

I_{2}

, are:

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Chemistry Crash Course NEET>Chapter 18 - The p-Block Elements>Level 1>Q 138

Hydrolysis of

{BCl}_{3}

gives

X

which on treatment with sodium carbonate produces

Y, X

and

Y

, respectively, are:

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Chemistry Crash Course NEET>Chapter 18 - The p-Block Elements>Level 1>Q 139

The element that occurs free in nature is:

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Chemistry Crash Course NEET>Chapter 18 - The p-Block Elements>Level 1>Q 140

The element that does not show allotropy is:

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Chemistry Crash Course NEET>Chapter 18 - The p-Block Elements>Level 1>Q 141

The tendency of the element that remains unchanged on going down in the nitrogen family is

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Chemistry Crash Course NEET>Chapter 18 - The p-Block Elements>Level 1>Q 142

Noble gases have atmospheric abundance in dry air

~ 1 %

by volume of which is the major constituent?

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Chemistry Crash Course NEET>Chapter 18 - The p-Block Elements>Level 1>Q 143

The coloured discharge tubes for advertisement mainly contains:

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Chemistry Crash Course NEET>Chapter 18 - The p-Block Elements>Level 1>Q 144

Deep sea divers used to respirate a mixture of