Table of Contents
Chemistry is a subject that revolves around understanding concepts and applying them effectively. Practicing questions is one of the best ways to deepen your expertise in various areas of chemistry. This page provides comprehensive coverage of key topics, including organic, inorganic, and physical chemistry, each of which requires a unique approach to solve questions.
To help students grasp the topics thoroughly, we have compiled chapter-wise Chemistry MCQs for Class 11 along with answers. These multiple-choice questions are carefully crafted to cater to the needs of students preparing for competitive exams like NEET, AIIMS, JEE Mains, JEE Advanced, IIT JEE, and others. The questions are structured to gradually increase in difficulty, ensuring a progressive learning curve. Each chapter includes a range of questions, from basic to advanced levels, designed to strengthen understanding and problem-solving skills in chemistry.
Chapter-Wise MCQs for Class 11 Chemistry
Chapter 1: Some Basic Concepts of Chemistry
Chapter 3: Classification of Elements and Periodicity in Properties
Chapter 4: Chemical Bonding and Molecular Structure
Chapter 6: Thermodynamics
Chapter 7: Equilibrium
Chapter 9: Hydrogen
Chapter 10: The s-Block Elements
Chapter 11: The p-Block Elements
Chapter 12: Organic Chemistry – Some Basic Principles & Techniques
Chapter 13: Hydrocarbons
Chapter 14: Environmental Chemistry
Advantages of solving Class 11 Chemistry MCQs
- The MCQs are a great way to check how well you understand the topics in Class 11 Chemistry.
- They can also show you which areas need more practice and improvement.
- By solving these MCQs, you can sharpen your problem-solving skills and learn to handle questions confidently under time pressure.
- Practicing these questions will also help you get ready for the CBSE Class 11 annual exams.
Chapter-Wise MCQs for Class 11 Chemistry – Question with Answer
Chapter 1: Some Basic Concepts of Chemistry
- Which of the following is the SI unit of mass?
a) Gram
b) Kilogram
c) Milligram
d) Quintal
Answer: b) Kilogram - Avogadro’s number is:
a) \(6.022 \times 10^{23}\)
b) \(1.602 \times 10^{-19}\)
c) \(9.109 \times 10^{-31}\)
d) \(1.672 \times 10^{-27}\)
Answer: a) \(6.022 \times 10^{23}\) - Which law states that “Mass can neither be created nor destroyed”?
a) Law of Definite Proportions
b) Law of Conservation of Mass
c) Dalton’s Atomic Theory
d) Law of Multiple Proportions
Answer: b) Law of Conservation of Mass
Chapter 2: Structure of Atom
- The charge of an electron is:
a) \(+1.6 \times 10^{-19}\) C
b) \(-1.6 \times 10^{-19}\) C
c) \(+1.0 \times 10^{-19}\) C
d) \(0\)
Answer: b) \(-1.6 \times 10^{-19}\) C - Which quantum number specifies the shape of an orbital?
a) Principal quantum number
b) Azimuthal quantum number
c) Magnetic quantum number
d) Spin quantum number
Answer: b) Azimuthal quantum number - In the hydrogen spectrum, the Balmer series lies in which region?
a) Ultraviolet
b) Infrared
c) Visible
d) Microwave
Answer: c) Visible
Chapter 3: Classification of Elements and Periodicity in Properties
- Which of the following elements has the highest electronegativity?
a) Oxygen
b) Fluorine
c) Nitrogen
d) Chlorine
Answer: b) Fluorine - The atomic radius decreases across a period because:
a) The number of shells increases
b) Nuclear charge decreases
c) Nuclear charge increases
d) Electron shielding increases
Answer: c) Nuclear charge increases - What is the electronic configuration of \( \text{Na}^{+} \)?
a) \(1s^2 2s^2 2p^6 3s^1\)
b) \(1s^2 2s^2 2p^6\)
c) \(1s^2 2s^2 2p^5\)
d) \(1s^2 2s^1 2p^6\)
Answer: b) \(1s^2 2s^2 2p^6\)
Chapter 4: Chemical Bonding and Molecular Structure
- The type of bond in \( \text{NaCl} \) is:
a) Covalent
b) Ionic
c) Metallic
d) Hydrogen
Answer: b) Ionic - Which of the following molecules is non-polar?
a) \( \text{HCl} \)
b) \( \text{H}_2\)
c) \( \text{H}_2O\)
d) \( \text{NH}_3\)
Answer: b) \( \text{H}_2 \) - The bond angle in methane (\( \text{CH}_4 \)) is:
a) 90°
b) 109.5°
c) 120°
d) 180°
Answer: b) 109.5°
Chapter 5: States of Matter
- Boyle’s law states that at constant temperature:
a) Pressure is directly proportional to volume
b) Pressure is inversely proportional to volume
c) Pressure is directly proportional to temperature
d) Volume is directly proportional to temperature
Answer: b) Pressure is inversely proportional to volume - The SI unit of pressure is:
a) Pascal
b) Atmosphere
c) Bar
d) Torr
Answer: a) Pascal - The critical temperature is the temperature:
a) Above which gas cannot be liquefied
b) At which liquid boils
c) Below which gas freezes
d) At which vapor pressure equals atmospheric pressure
Answer: a) Above which gas cannot be liquefied
Chapter 6: Thermodynamics
- The first law of thermodynamics is a statement of:
a) Conservation of mass
b) Conservation of energy
c) Conservation of momentum
d) Conservation of temperature
Answer: b) Conservation of energy - An exothermic reaction is characterized by:
a) Release of heat
b) Absorption of heat
c) No heat exchange
d) Formation of gaseous products
Answer: a) Release of heat - Which of the following is a state function?
a) Work
b) Heat
c) Internal energy
d) None of the above
Answer: c) Internal energy
