The p-Block Elements Test

Result

The p-Block Elements Test - 14

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 lead nitrate forms oxides of nitrogen and lead. The oxides formed are ______.

A
N₂O,PbO

B
NO₂,PbO

C
NO, PbO

D
NO,PbO₂

Solution

2Pb(NO₃)₂→ 2PbO + 4NO₂ + O₂
Question 2
1 / -0

Which of the following elements does not show allotropy?

A
Nitrogen

B
Bismuth

C
Antimony

D
Arsenic

Solution

The single N-N bond is weak because of high inter-electronic repulsion of the non-bonding electrons, owing to the small bond length. As a result the catenation tendency is weaker in nitrogen that is why it does not show allotropy.
Question 3
1 / -0

Maximum covalency of nitrogen is _________.

A
3

B
5

C
4

D
6

Solution

The electronic configuration of nitrogen is ns²np³. Nitrogen is restricted to the maximum covalency of 4 since only four (one s and three p) orbitals are available for bonding.
Question 4
1 / -0

If chlorine gas is passed through hot NaOH solution, two changes are observed in the oxidation number of chlorine during the reaction. These are ________ and _________.

(i) 0 to +5

(ii) 0 to +3

(iii) 0 to –1

(iv) 0 to +1

A
(i) and (iii)

B
(i) and (ii)

C
(ii) and (iii)

D
(iii) and (iv)

Solution

6NaOH + 3Cl₂ → 5NaCl + NaClO₃ + 3H₂O

When chlorine gas is passed through hot NaOH solution it produces NaCl and NaClO₃ . Thus oxidation state of chlorine changes from 0 to -1 and 0 to +5 respectively.
Question 5
1 / -0

Which of the following statements are correct?

(i) Among halogens, radius ratio between iodine and fluorine is maximum.

(ii) Leaving F—F bond, all halogens have weaker X—X bond than X—X' bond in interhalogens.

(iii) Among interhalogen compounds maximum number of atoms are present in iodine fluoride.

(iv) Interhalogen compounds are more reactive than halogen compounds.

A
(i), (ii) and (iv)

B
(i), (iii) and (iv)

C
(i), (ii) and (iii)

D
(ii), (iii) and (iv)

Solution

(i) Among group 17 elements radius ratio of iodine and fluorine is maximum because size of iodine is largest and fluorine is smallest in the group.

(ii) The correct statement is inter halogen compounds are more reactive than halogens (except fluorine). This is because X-X’ bond in interhalogens is weaker than X-X bond in halogens except F-F.

(iii) As the ratio between radii of X and X’ increase, the number of atoms per molecule also increases. Thus, iodine (VII) fluoride should have maximum number of atoms as the ratio of radii between I and F will be maximum.

(iv) Interhalogen compounds are more reactive than halogens (except fluorine). This is because X-X’ bond in interhalogens is weaker than X-X’ bond in halogens.
Question 6
1 / -0

Assertion : N₂ is less reactive than P₄.

Reason : Nitrogen has more electron gain enthalpy than phosphorus.

A
Both assertion and reason are correct statements, and reason is the correct explanation of the assertion.

B
Both assertion and reason are correct statements, but reason is not the correct explanation of the assertion.

C
Assertion is correct, but reason is wrong statement.

D
Assertion is wrong but reason is correct statement.

Solution

N₂ is less reactive than P₄ molecule this is so, because nitrogen has very high bond dissociation enthalpy because of triple bond between two nitrogen atom which is not the case with phosphorus.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

The p-Block Elements Test - 14

Result

The p-Block Elements Test - 14

Score

-

Rank

-

SHARING IS CARING

Question 1

N2O,PbO

NO2,PbO

NO, PbO

NO,PbO2

Solution

Question 2

Nitrogen

Bismuth

Antimony

Arsenic

Solution

Question 3

3

5

4

6

Solution

Question 4

(i) and (iii)

(i) and (ii)

(ii) and (iii)

(iii) and (iv)

Solution

Question 5

(i), (ii) and (iv)

(i), (iii) and (iv)

(i), (ii) and (iii)

(ii), (iii) and (iv)

Solution

Question 6

Both assertion and reason are correct statements, and reason is the correct explanation of the assertion.

Both assertion and reason are correct statements, but reason is not the correct explanation of the assertion.

Assertion is correct, but reason is wrong statement.

Assertion is wrong but reason is correct statement.

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.

N₂O,PbO

NO₂,PbO

NO,PbO₂