COMEDK UGET 2025 Chemical Bonding and Molecular Structure Practice Questions with Solutions

COMEDK UGET 2025 Chemical Bonding and Molecular Structure Practice Questions with Solutions: Chemical Bonding and Molecular Structure is one of the key topics from the COMEDK UGET 2025 Chemistry syllabus. Around 5 questions were asked from the chapter Chemical Bonding and Molecular Structure in the previous year. You can expect a somewhat similar number of questions in the upcoming COMEDK UGET 2025 exam. Generally, the questions are focused on sub topics, like VSEPR theory, dipole moments, bond types etc. To prepare well for this chapter, it is important that you solve practical questions and analyze your preparation. We have added the COMEDK UGET 2025 Chemical Bonding and Molecular Structure practice questions with solutions on this page so that you can attempt and test your understanding of the topic. Chemical Bonding and Molecular structure carry around 8% weightage in the COMEDK exam. To be able to attempt all questions and score full marks, you must learn and revise the important reactions, relation between bonds and so on equations from COMEDK Chemical Bonding sample questions. Once you have studied the topic, start solving the COMEDK UGET Chemical Bonding and Molecular Structure practice questions, mock tests, previous year papers etc. 

COMEDK UGET 2025 Chemical Bonding and Molecular Structure Important Topics

The authorities have prepared the COMEDK UGET Chemistry syllabus as per CBSE Class 11 and 12. The COMEDK syllabus 2025 holds 33% weightage of Class 11 syllabus and 67% weightage of Class 12th syllabus. You can check the detailed list of topics and sub-topics under COMEDK UGET Chemical Bonding and Molecular Structure below. 

Also Check - COMEDK 2025 Chemistry Formula Sheet

COMEDK UGET 2025 Chemical Bonding and Molecular Structure Expected Weightage

You must be aware of the COMEDK UGET topic-wise weightage so you can strategize a good preparation plan. As per the COMEDK previous year paper analysis, the Chemical Bonding and Molecular Structure is an important topic as it carries approximately 8% weightage with at least 5 questions . Check the COMEDK UGET Chemica Bonding and Molecular expected weightage details given below. 

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COMEDK UGET 2025 Chemical Bonding and Molecular Practice Questions with Solutions

We have added the COMEDK UGET 2025 Chemical Bonding and Molecular practice questions with solutions below. These COMEDK UGET questions have been taken from the previous year papers. Solve the following COMEDK Chemical Bonding sample questions and find out about the mistakes you are making. Improve on your mistakes and practice more questions for the COMEDK UGET 2025 exam.

Q1- For a stable molecule the value of bond order must be

A) Negative

B) Positive

C) Zero

D) There is no relationship between stability and bond order

Correct Answer:Option B

Explanation: The bond order value needs to be positive for a molecule to be stable. Bond order is directly correlated with stability.

Q2- Choose the correct statement from the following:

i. Isoelectronic molecules/ions have the same bond order.

ii. Dipole moment of NH₃ is greater than that of NF₃.

iii. The Carbon in Methyl Carbocation is sp³ hybridised.

iv. The stability of an ionic compound is measured in terms of its lattice enthalpy and not simply based on attaining Octet configuration.

A) iii.

B) i.

C) iv.

D) ii.

Correct Answer: Option D

Explanation:

Statement i: Isoelectronic molecules/ions have the same bond order.

This statement is incorrect. Despite having the same amount of electrons, isoelectronic species may differ in their bond ordering because of variations in their nuclear charges and electron configurations within molecular orbitals. Consequently, the bond order of isoelectronic molecules and ions is not always the same.

Statement ii: Dipole moment of NH₃ is greater than that of NF₃.

This statement is correct. Because the dipole moments of the N-H bonds point in the direction of the nitrogen in NH₃, the lone pair on the nitrogen increases the dipole moment overall. The extremely electronegative fluorine atoms in NF₃ reduce the molecule's total dipole moment by drawing electron density away.

Statement iii: The Carbon in Methyl Carbocation is sp³ hybridised.

This statement is incorrect. The carbon in a methyl carbocation (CH+₃) is sp² hybridised because it has only three regions of electron density (three bonds and no lone pairs), forming a planar structure.

Statement iv:  The stability of an ionic compound is measured in terms of its lattice enthalpy and not simply based on attaining Octet configuration.

This statement is correct. The energy generated when ions combine to form a lattice structure is known as the lattice enthalpy, and it does in fact play a significant role in determining the stability of an ionic molecule. Without taking lattice enthalpy into consideration, achieving an octet configuration by itself does not adequately explain the stability.

According to this analysis, Statements i, iii and iv are false. Statement ii is only true i.e. the bond order of isoelectronic molecules and ions is the same. Therefore, Option D is the right answer.

Q3- Which of the following compound does not exists?

A) NCl₃

B) NCl₅

C)  SbCl₃

D) NI₃

Correct Answer: Option B

Explanation: Since N lacks a d-orbital, it is in the second period. Therefore, nitrogen cannot have five pairs of bonding electrons around it. NCl₅ does not exist as a result.

A) HCN

B) H₂O₂

C) NH₄Cl

D) CH₄

Correct Answer:Option B

Explanation: In the case of H₂O₂, O−O bond is non-polar and O−H bond is polar. So, Option B is correct.

Q5- During the formation of a chemical bond

A) Energy decreases

B) Energy increases

C) Energy of the system does not change

D) Electron-electron repulsion becomes more than the nucleus-electron attraction

Correct Answer: Option A

Explanation: The energy of the system drops when energy is released during the creation of a chemical bond. As a result, the relationship that was made became stable.

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