Class 11 Chemistry Chemical Bonding and Molecular Structure Exam Questions

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Read and download the Class 11 Chemistry Chemical Bonding and Molecular Structure Exam Questions. Designed for 2025-26, this advanced study material provides Class 11 Chemistry students with detailed revision notes, sure-shot questions, and detailed answers. Prepared by expert teachers and they follow the latest CBSE, NCERT, and KVS guidelines to ensure you get best scores.

Advanced Study Material for Class 11 Chemistry Chapter 4 Chemical Bonding and Molecular Structure

To achieve a high score in Chemistry, students must go beyond standard textbooks. This Class 11 Chapter 4 Chemical Bonding and Molecular Structure study material includes conceptual summaries and solved practice questions to improve you understanding.

Class 11 Chemistry Chapter 4 Chemical Bonding and Molecular Structure Notes and Questions

LEVEL-1

1. Arrange the following in order of increasing bond angles around central atom SF6,CF4,BF3
Ans: SF6,CF4,BF3
 
 
2. A single bond between two atoms is a sigma bond. Comment?
Ans: Bonding taking place along the nuclear axis.
 
 
3. Name an inorganic molecule showing sp3 and sp2 hybridization.
Ans: NH3 , BCl3
 
 
4. The two 0-0 bond distances in ozone molecule are equal justify.
Ans: Due to resonance
 
 
5. Define bond enthalpy and bond order?
Ans: Bond Enthalpy: the amount of energy required to break one mole bonds of a particular type between the atom in the gaseous state of a substance. Bond Order: According to Lewis concept, in a covalent bond, the bond order may be given as the number of bonds between two atoms in a molecule.
 
 
6. What is the shape of NH4+?
Ans: Tetrahedral
 
 
7. Which has larger dipole moment NH3 orNF3?
Ans: NH3
 
 
8. How many sigma and pi bond are present in C2H4 molecule?
Ans: 5 sigma and one pi bond
  
LEVEL-2

1. Explain the formation of chemical bond?
Ans: Due to the transfer or sharing of electrons.
 
2. Write octet rule and its significance and limitation.
Ans: The atoms of different elements take part in chemical combination in order to complete their octet or duplet in some cases such as H, Li, Be etc. This is known as octet rule. Limitations of Octet rule:
i) Odd number of electrons.
ii) Incomplete octet.
iii) Expanded octet
 
 
3. What is dipole moment? What is its significance?
Ans: Dipole moment is the product of Charge and distance between both the nucleus. It significance:
(i) Polarity between the charge
(ii) Ionic nature.
 
4. What is hybridization of atomic orbital?
Ans: The phenomenon of mixing of orbitals of the same atom with slight difference in energies so as to redistribute their energies and give new orbitals of equivalent energy and shape. The new orbitals which get formed are known as hybrid orbitals.
 
5. Discuss the shape of sp and sp2 hybrid orbital.
Ans: sp – linear and sp2 – trigonal planar
 
6. What are two different types of hydrogen bonding?
Ans: Inter and Intramolecular hydrogen bonding
 
 
 
 
LEVEL-3


1. Why the bond angle H-N-H is 107° and H-O-H is 105°, instead of 109°28’ characteristic of tetrahedral structure?
Ans: lone pair lone pair repulsion in H2O has more magnitude than that of lone pair bond pair repulsion in NH3.
 
2. What type of bonding would you expect between
a. A metal and a non metal?
b. A metal and another metal?
c. A non metal and a non metal?
Ans: a. Ionic bonding
b. metallic bonding
c. covalent bonding
 
3. Which one of the sigma or pie bond is stronger and why?
Ans: Sigma bond is more stronger than pi bond because of more extent of overlapping.
 
4. Differentiate between a polar and a non polar covalent bond?
Ans: Polar covalent bond is formed between two non-metals of different electro negativities. Non-polar covalent bond is formed between two non-metals of same or nearly same electro negativities.
 
5. Explain the VSEPR theory.
Ans:
i. The shape of the molecule depends upon the number of electron pairs (bonded or non-bonded) around the central atom.
ii. The electron pairs around the central atom tend to repel one another since the electron clouds are negatively charged.
iii. The electron pairs in space tend to occupy such positions that they are at maximum distance apart and the repulsive interactions are minimum.
iv. A multiple bond is treated as if it is a single bond and the electron pairs which constitute the bond may be regarded as single pairs.
v. Where two or more resonance structures can represent a molecule, the VSEPRmodel is applicable to any such structure.
vi. Gillespie and Nyholmn stated that the electron pairs existing as lone pairs cause greater repulsive interactions as compared to bonded electron pairs. In the light of this, the repulsive interactions follow the order:
Lone pair – Lone pair > Lone pair – Bond pair > Bond pair – Bond pair
 
 
 
Chapter 01 Some Basic Concepts of Chemistry
CBSE Class 11 Chemistry Basic Concepts Of Chemistry Important Questions
Class 11 Chemistry Basic Concepts of Chemistry Exam Questions
Chapter 02 Structure of Atom
CBSE Class 11 Chemistry Atomic Structure Flash Cards
Class 11 Chemistry Structure of Atom Exam Questions
Chapter 03 Classification of Elements and Periodicity in Properties
CBSE Class 11 Chemistry Periodic Classification Flash Cards
Class 11 Chemistry Classification of Elements and Periodicity in Properties Exam Questions
Chapter 04 Chemical Bonding and Molecular Structure
Class 11 Chemistry Chemical Bonding and Molecular Structure Exam Questions
Chapter 05 Thermodynamics
CBSE Class 11 Chemistry Thermodynamics Flash Cards
Class 11 Chemistry Thermodynamics Exam Questions
Chapter 06 Equilibrium
CBSE Class 11 Chemistry Equilibrium Flash Cards
Class 11 Chemistry Equilibrium Exam Questions
Chapter 07 Redox Reactions
Class 11 Chemistry Redox Reactions Exam Questions
Chapter 08 Organic Chemistry Some Basic Principles and Techniques
CBSE Class 11 Chemistry Organic Chemistry Flash Cards
Class 11 Chemistry Organic Chemistry Some Basic Principles and Techniques Exam Questions
Chapter 09 Hydrocarbons
Class 11 Chemistry Hydrocarbons Exam Questions
Minds Map
CBSE Class 11 Chemistry Minds Map All Chapters
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CBSE Class 11 Chemistry s block elements Flash Cards
CBSE Class 11 Chemistry States of Matter Flash Cards
CBSE Class 11 Chemistry The Gas Laws Flash Cards
Class 11 Chemistry Environmental Chemistry Exam Questions
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Class 11 Chemistry The s Block Element Exam Questions

Important Practice Resources for Class 11 Chemistry

CBSE Class 11 Chemistry Chapter 4 Chemical Bonding and Molecular Structure Study Material

Students can find all the important study material for Chapter 4 Chemical Bonding and Molecular Structure on this page. This collection includes detailed notes, Mind Maps for quick revision, and Sure Shot Questions that will come in your CBSE exams. This material has been strictly prepared on the latest 2026 syllabus for Class 11 Chemistry. Our expert teachers always suggest you to use these tools daily to make your learning easier and faster.

Chapter 4 Chemical Bonding and Molecular Structure Expert Notes & Solved Exam Questions

Our teachers have used the latest official NCERT book for Class 11 Chemistry to prepare these study material. We have included previous year examination questions and also step-by-step solutions to help you understand the marking scheme too. After reading the above chapter notes and solved questions also solve the practice problems and then compare your work with our NCERT solutions for Class 11 Chemistry.

Complete Revision for Chemistry

To get the best marks in your Class 11 exams you should use Chemistry Sample Papers along with these chapter notes. Daily practicing with our online MCQ Tests for Chapter 4 Chemical Bonding and Molecular Structure will also help you improve your speed and accuracy. All the study material provided on studiestoday.com is free and updated regularly to help Class 11 students stay ahead in their studies and feel confident during their school tests.

What is included in the advanced study material for Class 11 Chemistry Chapter Chapter 4 Chemical Bonding and Molecular Structure?

Our advanced study package for Chapter Chapter 4 Chemical Bonding and Molecular Structure includes detailed concepts, diagrams, Mind Maps, and explanation of complex topics to ensure Class 11 students learn as per syllabus for 2026 exams.

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Yes, teachers use our Class 11 Chemistry resources for lesson planning as they are in simple language and have lot of solved examples.

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Does this material cover rationalized content for the 2025-26 CBSE session?

Yes, our subject matter experts have updated the Chapter Chapter 4 Chemical Bonding and Molecular Structure material to align with the rationalized NCERT textbooks and have removed deleted topics and added new competency-based questions.