P - Block Elements Test

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P - Block Elements Test - 89

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Weekly Quiz Competition

Question 1
4 / -1

The correct decreasing order of acidic character is

A
HClO > HBrO > HIO

B
HIO > HBrO > HCIO

C
HBrO > HIO > HClO

D
HCIO > HIO > HBrO
Question 2
4 / -1

The set with correct order of acidity is

A
HClO < HClO₂ < HClO₃ < HClO₄

B
HClO₄ < HClO₃ < HClO₂ < HClO

C
HClO < HClO₄ < HCIO₃ < HClO₂

D
HClO₄ < HClO₂ < HClO₃ < HClO
Question 3
4 / -1

The bond energies of F₂, Cl₂, Br₂ and I₂ are 37, 58 46 and 36 k cal mol^-1 respectively. The strongest bond is present in

A
Br₂

B
I₂

C
Cl₂

D
F₂
Question 4
4 / -1

Which one of the following order is correct for the bond energies of halogen molecules?

A
I₂ > Cl₂ >Br₂

B
Br₂ > Cl₂ > I₂

C
I₂ > Br₂ > Cl₂

D
Cl₂ > Br₂ > I₂
Question 5
4 / -1

Which reaction is not feasible?

A
2KI + Br₂ → 2KBr + I₂

B
2KBr + I₂ → 2KI + Br₂

C
2KBr + Cl₂ → 2KCI + Br₂

D
2H₂O + 2F₂ → 4HF + O₂
Question 6
4 / -1

Which of the following statements is true ?

A
Silicon exhibits 4 coordination number in its compounds

B
Bond energy of F₂ is less than Cl₂

C
Mn (III) oxidation state is more stable than Mn (II) in aqueous state

D
Elements of 15th group show only +3 and + 5 oxidation states
Question 7
4 / -1

Which of the following statement is not true?

A
Among halide ions, iodide is the most powerful reducing agent

B
Fluorine is the only halogen that does not show a variable oxidation state

C
HOCl is stronger acid than HOBr

D
HF is a stronger acid than HCl
Question 8
4 / -1

Concentrated hydrochloric acid when kept in open air sometimes produces a cloud of white fumes The explanation for it is that

A
Oxygen in air reacts with the emitted HCl gas to form a cloud of chlorine gas

B
Strong affinity of HCl gas for moisture in air results in forming of droplets of liquid solution which appears like a clouds smoke

C
Due to strong affinity for water, conc.HCl pulls moisture of air towards cloud

D
Conc. HCl emits strongly smelling HCl gas all the time.
Question 9
4 / -1

Which of the following is called super acid ?

A
SbF₅

B
FSO₃H

C
HOCN

D
Both (1) and (2)

Solution
Question 10
4 / -1

Which of the following is called anhydrone?

A
HClO₄

B
Anhyd.Mg(ClO₄)₂

C
Anhyd.Ca(ClO₄)₂

D
KClO₃

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P - Block Elements Test - 89

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P - Block Elements Test - 89

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Question 1

HClO > HBrO > HIO

HIO > HBrO > HCIO

HBrO > HIO > HClO

HCIO > HIO > HBrO

Question 2

HClO < HClO2 < HClO3 < HClO4

HClO4 < HClO3 < HClO2 < HClO

HClO < HClO4 < HCIO3 < HClO2

HClO4 < HClO2 < HClO3 < HClO

Question 3

Br2

I2

Cl2

F2

Question 4

I2 > Cl2 >Br2

Br2 > Cl2 > I2

I2 > Br2 > Cl2

Cl2 > Br2 > I2

Question 5

2KI + Br2 → 2KBr + I2

2KBr + I2 → 2KI + Br2

2KBr + Cl2 → 2KCI + Br2

2H2O + 2F2 → 4HF + O2

Question 6

Silicon exhibits 4 coordination number in its compounds

Bond energy of F2 is less than Cl2

Mn (III) oxidation state is more stable than Mn (II) in aqueous state

Elements of 15th group show only +3 and + 5 oxidation states

Question 7

Among halide ions, iodide is the most powerful reducing agent

Fluorine is the only halogen that does not show a variable oxidation state

HOCl is stronger acid than HOBr

HF is a stronger acid than HCl

Question 8

Oxygen in air reacts with the emitted HCl gas to form a cloud of chlorine gas

Strong affinity of HCl gas for moisture in air results in forming of droplets of liquid solution which appears like a clouds smoke

Due to strong affinity for water, conc.HCl pulls moisture of air towards cloud

Conc. HCl emits strongly smelling HCl gas all the time.

Question 9

SbF5

FSO3H

HOCN

Both (1) and (2)

Solution

Question 10

HClO4

Anhyd.Mg(ClO4)2

Anhyd.Ca(ClO4)2

KClO3

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HClO < HClO₂ < HClO₃ < HClO₄

HClO₄ < HClO₃ < HClO₂ < HClO

HClO < HClO₄ < HCIO₃ < HClO₂

HClO₄ < HClO₂ < HClO₃ < HClO

Br₂

I₂

Cl₂

F₂

I₂ > Cl₂ >Br₂

Br₂ > Cl₂ > I₂

I₂ > Br₂ > Cl₂

Cl₂ > Br₂ > I₂

2KI + Br₂ → 2KBr + I₂

2KBr + I₂ → 2KI + Br₂

2KBr + Cl₂ → 2KCI + Br₂

2H₂O + 2F₂ → 4HF + O₂

Bond energy of F₂ is less than Cl₂

SbF₅

FSO₃H

HClO₄

Anhyd.Mg(ClO₄)₂

Anhyd.Ca(ClO₄)₂

KClO₃