p-Block Elements Test

Result

p-Block Elements Test - 40

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

On heating KClO₃ we get:

A
KClO₂ + O₂

B
KCl + O₂

C
KCl + O₃

D
KCl + O₂ + O₃
Question 2
1 / -0

Select the correct option regarding the properties of dioxygen?

A
Dioxygen never reacts with metals

B
Dioxygen is diamagnetic in nature

C
Combination of dioxygen with other elements is highly exothermic process

D
Dioxygen liquefies at 55 K and freezes at 90 K

Solution

Dioxygen reacts with metals and is paramagnetic. It combines with other elements to form oxides where the reaction is highly exothermic.
Question 3
1 / -0

Which of the following is not correctly matched?

A
Acidic oxides - P₂O₅, NO₂, Cl₂O₇

B
Basic oxides - Na₂O, CaO, MgO

C
Neutral oxides - CO₂, CO, BeO

D
Amphoteric oxides - ZnO, SnO, Al₂O₃

Solution

Neutral oxide- oxides which do not react with acid or base are neutral. But here CO₂ is an acidic oxide and BeO dissolves in strongly acidic or basic solutions. Thus BeO is an amphoteric oxide.
Question 4
1 / -0

The correct order of acidic strength is

A
K₂O > CaO > MgO

B
CO₂ > N₂O₅ > SO₃

C
Na₂O > MgO > Al₂O₃

D
Cl₂O₇> SO₂ > P₄O₁₀

Solution

The species Cl₂O₇, SO₂ and P₄O₁₀ are the anhydrides of HClO₄, H₂SO₃ and H₃PO₄ respectively. The acid strength of these acids follows the order HClO₄ > H₂SO₃ > H₃PO₄. The corresponding anhydrides also follow the same order.
Question 5
1 / -0

Which of the following is the wrong statement?

A
Ozone is paramagnetic gas

B
The two oxygen -oxygen bond length in ozone are identical

C
O₃ molecule is bent

D
Ozone is violet-black in solid state

Solution

Ozone is diamagnetic gas.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

p-Block Elements Test - 40

Result

p-Block Elements Test - 40

Score

-

Rank

-

SHARING IS CARING

Question 1

KClO2 + O2

KCl + O2

KCl + O3

KCl + O2 + O3

Question 2

Dioxygen never reacts with metals

Dioxygen is diamagnetic in nature

Combination of dioxygen with other elements is highly exothermic process

Dioxygen liquefies at 55 K and freezes at 90 K

Solution

Question 3

Acidic oxides - P2​O5​, NO2​, Cl2​O7​

Basic oxides - Na2​O, CaO, MgO

Neutral oxides - CO2​, CO, BeO

Amphoteric oxides - ZnO, SnO, Al2​O3​

Solution

Question 4

K2O > CaO > MgO

CO2 > N2O5 > SO3

Na2O > MgO > Al2O3

Cl2O7 > SO2 > P4O10

Solution

Question 5

Ozone is paramagnetic gas

The two oxygen -oxygen bond length in ozone are identical

O3​ molecule is bent

Ozone is violet-black in solid state

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.

KClO₂ + O₂

KCl + O₂

KCl + O₃

KCl + O₂ + O₃

Acidic oxides - P₂O₅, NO₂, Cl₂O₇

Basic oxides - Na₂O, CaO, MgO

Neutral oxides - CO₂, CO, BeO

Amphoteric oxides - ZnO, SnO, Al₂O₃

K₂O > CaO > MgO

CO₂ > N₂O₅ > SO₃

Na₂O > MgO > Al₂O₃

Cl₂O₇> SO₂ > P₄O₁₀

O₃ molecule is bent