Pradeep's New Course CHEMISTRY Vol.II>Chapter 11 - Some p-Block Elements>Competition Focus>Q 102

HARD

11th CBSE

IMPORTANT

Earn 100

$27 g$ of $Al$ was treated with $NaOH$ solution when a white gelatinous precipitate was obtained which upon strong heating gave an oxide. The amount of oxide (in g) is

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Important Questions on Some p-Block Elements

EASY

11th CBSE

IMPORTANT

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

Which of the following is only acidic in nature?

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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

Which of the following imparts green colour to the burner flame?

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11th CBSE

IMPORTANT

Pradeep's New Course CHEMISTRY Vol.II>Chapter 11 - Some p-Block Elements>TEST YOUR GRIP>Q 4

Which of the following does not exist in free state?

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11th CBSE

IMPORTANT

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

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

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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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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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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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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}

?