Pradeep's New Course CHEMISTRY Vol.II>Chapter 11 - Some p-Block Elements>TEST YOUR GRIP>Q 5

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11th CBSE

IMPORTANT

Earn 100

Among the halides (i) $B {Cl}_{3}$ (ii) ${AlCl}_{3}$ (iii) $G a {Cl}_{3}$ (iv) $I n {Cl}_{3}$ , the order of decreasing Lewis acid character is

60% studentsanswered this correctly

Important Questions on Some p-Block Elements

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11th CBSE

IMPORTANT

Pradeep's New Course CHEMISTRY Vol.II>Chapter 11 - Some p-Block Elements>TEST YOUR GRIP>Q 6

H_{3} B O_{3}

is-

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11th CBSE

IMPORTANT

Pradeep's New Course CHEMISTRY Vol.II>Chapter 11 - Some p-Block Elements>TEST YOUR GRIP>Q 7

A metal,

M

forms chlorides in

+ 2

and

+ 4

oxidation states, which of the following statements about these chlorides is correct?

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11th CBSE

IMPORTANT

Pradeep's New Course CHEMISTRY Vol.II>Chapter 11 - Some p-Block Elements>TEST YOUR GRIP>Q 8

Unlike

P b {Cl}_{4}, P b I_{4} & P b B r_{4}

are not found because-

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11th CBSE

IMPORTANT

Pradeep's New Course CHEMISTRY Vol.II>Chapter 11 - Some p-Block Elements>TEST YOUR GRIP>Q 9

Which gas is evolved when

P b O_{2}

is treated with concentrated

H N O_{3}

?

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11th CBSE

IMPORTANT

Pradeep's New Course CHEMISTRY Vol.II>Chapter 11 - Some p-Block Elements>TEST YOUR GRIP>Q 10

Which of the following statements about buckyball is incorrect?

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11th CBSE

IMPORTANT

Pradeep's New Course CHEMISTRY Vol.II>Chapter 11 - Some p-Block Elements>TEST YOUR GRIP>Q 1

How many

O

-atoms are shared per

S i O_{4}

tetrahedra in silicate anion of beryl mineral?

HARD

11th CBSE

IMPORTANT

Pradeep's New Course CHEMISTRY Vol.II>Chapter 11 - Some p-Block Elements>TEST YOUR GRIP>Q 2

The existence of lower oxidation state than the group oxidation state of group

13

and

14

elements is explained on the basis of which effect?

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11th CBSE

IMPORTANT

Pradeep's New Course CHEMISTRY Vol.II>Chapter 11 - Some p-Block Elements>TEST YOUR GRIP>Q 3

The most stable oxidation state of aluminium is +3 while that of thallium is _____.