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Sunday, September 19, 2021

CBSE 11 Chemistry Chapter Wise Marking Scheme, Weightage & Marks Distribution

CBSE Class 11 Chemistry Chapter Wise Weightage & Marks Distribution
CBSE Class 11 Chemistry Chapter Wise Weightage & Marks Distribution

CBSE Class 11 Chemistry Weightage: As the exams are nearing closer we have detailed Chemistry CBSE Class 11 Chemistry chapter wise weightage of marks for the year 2021. Students can use the given CBSE Class 11 Chemistry Marks distribution for planning and preparing the important topics before the exams. Class 11 Chemistry is one of the most scoring subjects in CBSE. Students should plan smartly and work more efficiently to score good marks in the subject. Two ways of working efficiently is to get accustomed to the CBSE Marking Scheme for CBSE Class 11 Chemistry and the important topics.


CBSE Class 11 Chemistry Weightage of Marks

Every year class 11 students look for such marks distribution before or near exams. This is because they think that in this way they will be able to score well in their exam and especially Chemistry. Moreover, they devote time to each chapter according to its marks.


Board

CBSE

Textbook

CBSE Based

Class

CBSE Class 11

Subject

Chemistry

Chapters

All Chapters

Provider

Hsslive.co.in


We have provided the complete CBSE Class 11 Chemistry Chapter Wise Weightage of complete syllabus for students preparing for upcoming exams.

How to get CBSE Class 11 Chemistry Chapter Wise Mark Distribution?

  1. Visit our website Hsslive.co.in.
  2. Look for CBSE Class 11 subject wise weightage and mark distribution.
  3. Now search for CBSE Class 11 Chemistry Weightage 2021 & Marking Scheme..
  4. After you reach the post take a screenshot or write down the CBSE Class 11 Chemistry Chapter Wise Mark Distribution.

CBSE Class 11 Chemistry Chapter Wise Weightage & Marks Distribution


You can find the section wise marks distribution anywhere. There are no particular marks that are reserved for particular chapters but by analysing past 10 years' questions I can give you an idea about it.

So after analysis the previous year question papers we have prepared the CBSE Class 11 Chemistry Chapter Wise Mark Distribution and Weightage for students below:


Unit No. Unit Name No. of Periods Marks
Unit I Some Basic Concepts of Chemistry 10 11
Unit II Structure of Atom 12
Unit III Classification of Elements and Periodicity in Properties 06 04
Unit IV Chemical Bonding and Molecular Structure 14 06
Unit V Redox Reactions 04 05
Unit VI Hydrogen 04
Unit VII Organic Chemistry: Some Basic Principles and Techniques  10  9
   Total  60  35

Some Basic Concepts of Chemistry:

General Introduction: Importance and scope of Chemistry. Atomic and molecular masses, mole concept and molar mass, percentage composition, empirical and molecular formula, chemical reactions, stoichiometry and calculations based on stoichiometry.

Structure of Atom:

Bohr’s model and its limitations, concept of shells and subshells, dual nature of matter and light, de Broglie’s relationship, Heisenberg uncertainty principle, concept of orbitals, quantum numbers, shapes of s, p and d orbitals, rules for filling electrons in orbitals – Aufbau principle, Pauli’s exclusion principle and Hund’s rule, electronic configuration of atoms, stability of half-filled and completely filled orbitals.

Classification of Elements and Periodicity in Properties:

Modern periodic law and the present form of periodic table, periodic trends in properties of elements -atomic radii, ionic radii, inert gas radii, Ionization enthalpy, electron gain enthalpy, electronegativity, valency. Nomenclature of elements with atomic number greater than 100.

Chemical Bonding and Molecular Structure:

Valence electrons, ionic bond, covalent bond, bond parameters, Lewis structure, polar character of covalent bond, covalent character of ionic bond, valence bond theory, resonance, geometry of covalent molecules, VSEPR theory, concept of hybridization, involving s, p and d orbitals and shapes of some simple molecules, molecular orbital theory of homonuclear diatomic molecules(qualitative idea only), Hydrogen bond.

Redox Reactions:

Concept of oxidation and reduction, redox reactions, oxidation number, balancing redox reactions, in terms of loss and gain of electrons and change in oxidation number.

Hydrogen:

Position of hydrogen in periodic table, occurrence, isotopes, hydrides-ionic covalent and interstitial; physical and chemical properties of water, heavy water, hydrogen as a fuel

Organic Chemistry: Some basic Principles and Techniques:

General introduction, classification and IUPAC nomenclature of organic compounds. Electronic displacements in a covalent bond: inductive effect, electromeric effect, resonance and hyper conjugation. Homolytic and heterolytic fission of a covalent bond: free radicals, carbocations, carbanions, electrophiles and nucleophiles, types of organic reactions.

Students can click on CBSE Class 11 Syllabus to know the syllabus for all the subjects.

Term II CBSE Class 11 Syllabus for Chemistry 2021-22

Unit No. Unit Name No. of Periods Marks
Unit V States of Matter: Gases and Liquids 09 15
Unit VI Chemical Thermodynamics 14
Unit VII Equilibrium 12
Unit X s -Block Elements 05 11
Unit XI p -Block Elements 09
Unit XIII Hydrocarbons 10 9
  Total 59 35

States of Matter: Gases and Liquids:

Three states of matter, intermolecular interactions, types of bonding, melting and boiling points, role of gas laws in elucidating the concept of the molecule, Boyle’s law, Charles law, Gay Lussac’s law, Avogadro’s law, ideal behaviour, empirical derivation of gas equation, Avogadro’s number, ideal gas equation and deviation from ideal behaviour.

Chemical Thermodynamics:

Concepts of System and types of systems, surroundings, work, heat, energy, extensive and intensive properties, state functions. First law of thermodynamics – internal energy and enthalpy, measurement of U and H, Hess’s law of constant heat summation, enthalpy of bond dissociation, combustion, formation, atomization, sublimation, phase transition, ionization, solution and dilution. Second law of Thermodynamics (brief introduction)
Introduction of entropy as a state function, Gibb’s energy change for spontaneous and nonspontaneous processes.
Third law of thermodynamics (brief introduction).

Equilibrium:

Equilibrium in physical and chemical processes, dynamic nature of equilibrium, law of mass action, equilibrium constant, factors affecting equilibrium – Le Chatelier’s principle, ionic equilibrium- ionization of acids and bases, strong and weak electrolytes, degree of ionization, ionization of poly basic acids, acid strength, concept of pH, buffer solution, solubility product, common ion effect (with illustrative examples).

s -Block Elements:

Group 1 and Group 2 Elements -General introduction, electronic configuration, occurrence, anomalous properties of the first element of each group, diagonal relationship, trends in the variation of properties (such as ionization enthalpy, atomic and ionic radii), trends in chemical reactivity with oxygen, water, hydrogen and halogens, uses.

Some p -Block Elements:

General Introduction to p -Block Elements Group 13 Elements: General introduction, electronic configuration, occurrence, variation of properties, oxidation states, trends in chemical reactivity, anomalous properties of first element of the group, Boron – physical and chemical properties. Group 14 Elements: General introduction, electronic configuration, occurrence, variation of properties, oxidation states, trends in chemical reactivity, anomalous behaviour of first elements. Carbon-catenation, allotropic forms, physical and chemical properties.

Hydrocarbons:

Classification of Hydrocarbons Aliphatic Hydrocarbons: Alkanes – Nomenclature, isomerism, conformation (ethane only), physical properties, chemical reactions.
Alkenes – Nomenclature, structure of double bond (ethene), geometrical isomerism, physical properties, methods of preparation, chemical reactions: addition of hydrogen, halogen, water, hydrogen halides (Markovnikov’s addition and peroxide effect), ozonolysis, oxidation, mechanism of electrophilic addition.
Alkynes – Nomenclature, structure of triple bond (ethyne), physical properties, methods of preparation, chemical reactions: acidic character of alkynes, addition reaction of – hydrogen, halogens, hydrogen halides and water.

Aromatic Hydrocarbons:

Introduction, IUPAC nomenclature, benzene: resonance, aromaticity, chemical properties: mechanism of electrophilic substitution. Nitration, sulphonation, halogenation, Friedel Craft’s alkylation and acylation, directive influence of functional group in monosubstituted benzene. Carcinogenicity and toxicity.


Importance of CBSE Class 11 Chemistry Weightage Distribution

Chemistry students should know the CBSE Class 11 Chemistry marks distribution to enhance their preparation in the right direction for the examinations. It will help the students to write an answer and help them to manage their time during the exam effectively.


CBSE Class 11 All Subjects Chapter Wise Weightage & Marks Distribution 2021


Knowing CBSE Class 11 Chemistry Chapter Wise Weightage 2021

After knowing the CBSE Class 11 Chemistry marks distribution 2021, students need to be aware of the CBSE Class 11 Chemistry mark distribution 2021 with exam pattern of CBSE Class 11 Chemistry board exam. Students should check the CBSE Class 11 Chemistry mark distribution 2021 to prepare well for the examination. The exam pattern will make the students familiar with the scheme of plus two total marks for each subject, duration of the exam, the total number of questions and types of questions asked in the exam. It will help the students to prepare for the exam in an effective manner and score well in the result.
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