Chemical Bonding Test

Result

Chemical Bonding Test - 9

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

The ion containing unpaired electron(s) is/are

A
NO^–

B
NO⁺

C
CN^–

D
CN⁺

Solution

CN^-, CN⁺ and NO⁺ have 10, 8 and 10 valence electrons which will be paired up in molecular orbitals.
NO^-has 12 valence electrons in molecular orbitals as: (σ 2s)² (σ* 2s)² (σ 2p_z)² (π 2p_x)²(π2p_y)(π* 2p_x)(π* 2p_y)

The correct answer is: NO^–
Question 2
1 / -0

A solution of dry hydrogen chloride in dry methylbenzene possesses which of the following property?

A
The pH of solution is acidic

B
Hydrogen gas is evolved when it reacts with Mg

C
The solution is a non-conductor of electricity

D
It gives a blue coloured solution when mixed with cupric oxide and warmed

Solution

Methylbenzene is a non-polar solvent and in such a solvent the ionisation of HCl does not occur.

The correct answer is: The solution is a non-conductor of electricity
Question 3
1 / -0

The most stable species among the following is

A
All are equally stable

B
CN⁺

C
CN

D
CN^–

Solution

More the bond order, higher is stability
Bond order of CN = 2.5
Bond order of CN^- = 3
Bond order of CN⁺ = 2

The correct answer is: All are equally stable
Question 4
1 / -0

Which of the following molecules have intermolecular hydrogen bonds?

A
(CH₃)₃BO₃

B
NaH₂PO₄

C
H₃BO₃

D
NaHPO₂

Solution

H-atom in NaHPO₂ is bonded with P (less electronegative), cannot involve in H-bonding and so also (CH₃)₃ BO₃.

The correct answer is: NaH₂PO₄,
Question 5
1 / -0

Which of the following does not use hybridized orbitals in its bonding?

A
CS₂

B
NF₃

C
HClO

D
HCl

Solution

NF₃ : sp³ ; CS₂ : sp ; HClO : sp³

The correct answer is: HCl

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Chemical Bonding Test - 9

Result

Chemical Bonding Test - 9

Score

-

Rank

-

SHARING IS CARING

Question 1

NO–

NO+

CN–

CN+

Solution

Question 2

The pH of solution is acidic

Hydrogen gas is evolved when it reacts with Mg

The solution is a non-conductor of electricity

It gives a blue coloured solution when mixed with cupric oxide and warmed

Solution

Question 3

All are equally stable

CN+

CN

CN–

Solution

Question 4

(CH3)3BO3

NaH2PO4

H3BO3

NaHPO2

Solution

Question 5

CS2

NF3

HClO

HCl

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.

NO^–

NO⁺

CN^–

CN⁺

CN⁺

CN^–

(CH₃)₃BO₃

NaH₂PO₄

H₃BO₃

NaHPO₂

CS₂

NF₃