WBJEE PYQs for Chemical Bonding and Molecular Structure with Solutions: Practice WBJEE Previous Year Questions

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Chemical Bonding and Molecular Structure is an important topic in the Chemistry section in WBJEE exam. Practising this topic will increase your score overall and make your conceptual grip on WBJEE exam stronger.

This article gives you a full set of WBJEE PYQs for Chemical Bonding and Molecular Structure with explanations for effective preparation. Practice of WBJEE Chemistry PYQs including Chemical Bonding and Molecular Structure questions regularly will improve accuracy, speed, and confidence in the WBJEE 2026 exam.

WBJEE PYQs for Chemical Bonding and Molecular Structure with Solutions

1.
The molecular shapes of SF₄,CF₄ and XeF₄ are
- the same with 2,0 and 1 lone pairs of electrons on the central atoms, respectively.
- the same with 1,1 and 1 lone pairs of electrons on the central atoms, respectively.
- the same with 0,1 and 2 lone pairs of electrons on the central atoms, respectively.
- the same with 1,0 and 2 lone pairs of electrons on the central atoms, respectively.
View Solution
2.
Which of the following contains the maximum number of lone pairs on the central atom?
- ClO⁻₃
- XeF₄
- SF₄
- I⁻₃
View Solution
3.
The species in which nitrogen atom is in a state of sp hybridisation is
- NO₃^-
- NO₂
- NO₂⁺
- NO₂^-
View Solution
4.
Which of the following hydrogen bonds is likely to be the weakest?
- C$-$H$\cdots$O
- N$-$H$\cdots$O
- O$-$H$\cdots$O
- O$-$H$\cdots$F
View Solution
5.
Select the molecule in which all the atoms may lie on a single plane is
- 4-nitrobenzaldehyde
- 4-methoxy benzaldehyde
- 4-methyl nitrobenzene
- 4-nitro acetophenone
View Solution
6.
The ground state magnetic property of $B_2$ and $C_2$ molecules will be
- $B_2$ paramagnetic and $C_2$ diamagnetic
- $B_2$ diamagnetic and $C_2$ paramagnetic
- Both are diamagnetic
- Both are paramagnetic
View Solution
7.
Suppose a gaseous mixture of He,Ne,Ar and Kr is irradiated with photons of the frequency appropriate to ionize Ar,What ion(s) will be present in the mixture?
- Ar+
- Kr⁺
- He⁺
- Both A and B
View Solution
8.
The bond order of HeH⁺ is:
- 1
- 2
- 3
- 4
View Solution
9.
BrF₃ self ionizes as following
- 2BrF₃⇋BrF⁺+BrF₅^-
- 2BrF₃⇋BrF₂⁺+BrF₄^-
- 2BrF₃⇋BrF₄⁺ +BrF₂^-
- 2BrF₃⇋BrF₃⁺+BrF₃^-
View Solution
10.
The number of terminal and bridging hydrogens in B$_2$H$_6$ are respectively
- 4 and 2
- 2 and 4
- 2 and 2
- 4 and 4
View Solution
11.
The number of lone pair of electrons and the hybridization of Xenon (Xe) in XeOF$_2$ are
- 1, sp$^3$
- 1, dsp$^2$
- 3, dsp$^3$
- 2, sp$^3$d
View Solution
12.
Unusual high boiling point of water is result of
- intermolecular hydrogen bonding
- intramolecular hydrogen bonding
- both intra and inter molecular hydrogen bonding
- high specific heat
View Solution
13.
Which of the following has the strongest H-bond ?
- $O - H...S$
- $S - H...O$
- $F - H...F$
- $F - H...O$
View Solution
14.
(i)(ii)(iii)
The correct order of C = O bond length in ethyl propanoate(I), ethyl propenoate(II) and ethenyl propanoate(III) is
- I>II>III
- III>II>I
- I>III>II
- II>I>III
View Solution
15.
In $SOCl_2$, the $Cl-S-Cl$ and $Cl-S-O$ bond angles are
- $130^{\circ}$ and $115^{\circ}$
- $106^{\circ}$ and $96^{\circ}$
- $107^{\circ}$ and $108^{\circ}$
- $96^{\circ}$ and $106^{\circ}$
View Solution

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WBJEE PYQs for Chemical Bonding and Molecular Structure with Solutions

1.The molecular shapes of SF4,CF4 and XeF4 are

2.Which of the following contains the maximum number of lone pairs on the central atom?

3.The species in which nitrogen atom is in a state of sp hybridisation is

4. Which of the following hydrogen bonds is likely to be the weakest?

5.Select the molecule in which all the atoms may lie on a single plane is

6.The ground state magnetic property of $B_2$ and $C_2$ molecules will be

7.Suppose a gaseous mixture of He,Ne,Ar and Kr is irradiated with photons of the frequency appropriate to ionize Ar,What ion(s) will be present in the mixture?

8. The bond order of HeH+ is:

9.BrF3 self ionizes as following

10. The number of terminal and bridging hydrogens in B$_2$H$_6$ are respectively

11. The number of lone pair of electrons and the hybridization of Xenon (Xe) in XeOF$_2$ are

12.Unusual high boiling point of water is result of

13.Which of the following has the strongest H-bond ?

14.(i)(ii)(iii)The correct order of C = O bond length in ethyl propanoate(I), ethyl propenoate(II) and ethenyl propanoate(III) is

15.In $SOCl_2$, the $Cl-S-Cl$ and $Cl-S-O$ bond angles are

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1.
The molecular shapes of SF₄,CF₄ and XeF₄ are

2.
Which of the following contains the maximum number of lone pairs on the central atom?

3.
The species in which nitrogen atom is in a state of sp hybridisation is

4.
Which of the following hydrogen bonds is likely to be the weakest?

5.
Select the molecule in which all the atoms may lie on a single plane is

6.
The ground state magnetic property of $B_2$ and $C_2$ molecules will be

7.
Suppose a gaseous mixture of He,Ne,Ar and Kr is irradiated with photons of the frequency appropriate to ionize Ar,What ion(s) will be present in the mixture?

8.
The bond order of HeH⁺ is:

9.
BrF₃ self ionizes as following

10.
The number of terminal and bridging hydrogens in B$_2$H$_6$ are respectively

11.
The number of lone pair of electrons and the hybridization of Xenon (Xe) in XeOF$_2$ are

12.
Unusual high boiling point of water is result of

13.
Which of the following has the strongest H-bond ?

14.
(i)(ii)(iii)
The correct order of C = O bond length in ethyl propanoate(I), ethyl propenoate(II) and ethenyl propanoate(III) is

15.
In $SOCl_2$, the $Cl-S-Cl$ and $Cl-S-O$ bond angles are