How to prepare and score Good marks in Chemistry Paper?

As far as competitions are concerned, especially those related to engineering and medical fields, chemistry becomes are a very important subject. It is the most scoring subject of all, when you talk about engineering entrance exams. In the boards as well, it is comparatively less difficult to score marks in chemistry, as the questions are mainly direct. It is easy to score a 100 in chemistry in boards. You just need to work hard dedicatedly.

  1. Prepare a good Timetable – the timetable that you prepare should be such that you get an ample amount of sleep and time to relax. This will help you build your concentration in studies. You should complete the tougher chapters first and then the easier ones to relieve yourself from any pressure during the exam days.
  2. Keep a reference material at hand (CBSE Study Material/CBSE Study Notes) – The right reference material is the one with maximum accuracy and least errors. These CBSE Study Material/CBSE Study Notes are just right to be kept as a reference. You can also get Toppers notes online, for free. Like the CBSE materials, Topper’s notes are also a good source of information.
  3. Solve the CBSE previous years’ question paper – The best way to test your preparation is to solve the CBSE previous years’ question paper. This will help you prepare your answers for boards.
  4. Try online test of chemistry class 12 – After the previous years’ papers, you can solve these class 12th practice tests. The online tests of chemistry class 12 can help you enhance your skills by the variety of questions they offer. The pattern of questions asked in these class 12th practice tests can be useful in strengthening your concepts and analytical thinking.

Here are some important chapter-wise topics in Chemistry

Solid State

  1. Classification of solids
  2. The Unit cell in 2D and 3D
  3. The types of Packing in solids
  4. The Electrical and magnetic properties
  5. Band theory


  1. Henry’s Law
  2. Colligative properties
  3. Raoult’s law
  4. The Relative lowering of vapor pressure
  5. The Depression in the freezing point
  6. The Elevation in the boiling point
  7. Osmotic pressure
  8. The Determination of molecular masses by colligative properties
  9. The Abnormal molecular masses
  10. The Van’t Hoff factor


  1. Redox reactions
  2. The Conductance in electrolytic solutions
  3. Specific and molar conductivity
  4. Variations of conductivity with concentration
  5. Kohlrausch’s Law
  6. Electrolysis and law of electrolysis
  7. The EMF of a cell
  8. The Standard electrode potential
  9. The Nernst equation
  10. The relation between Gibbs energy change and the emf of a cell

Chemical Kinetics

  1. The Rate of a reaction
  2. The Factors affecting the rate of reaction: concentration, temperature, catalyst
  3. Order and molecularity of a reaction
  4. The Rate law and specific rate constant
  5. The Integrated rate equations and half-life
  6. The Concept of collision theory
  7. The Arrhenius equation

Surface Chemistry

  1. Adsorption – physisorption, and chemisorption
  2. The Factors affecting adsorption of gases on solids
  3. Enzyme catalysis colloidal state distinction between true solutions

General Principles and Processes of Isolation of Elements

  1. The Principles and methods of extraction – concentration, oxidation, reduction
  2. The Electrolytic method and refining
  3. The Occurrence and principles of extraction of aluminum, copper, zinc & iron

p Block Elements –

Group 15 Elements:

  1. The Electronic configuration, occurrence, oxidation states, trends in physical and chemical properties
  2. Nitrogen, preparation properties & uses
  3. Phosphorus

Group 16 Elements:

  1. The Electronic configuration, oxidation states, occurrence, trends in physical and chemical properties
  2. Dioxygen: Preparation, Properties& Uses
  3. Ozone
  4. Sulfur -allotropic forms

Group 17 Elements:

  1. Electronic configuration, oxidation states, occurrence, trends in physical and chemical properties
  2. Compounds of halogens
  3. Interhalogen compounds

Group 18 Elements:

  1. Electronic configuration
  2. Trends in physical and chemical properties & uses

d and f Block Elements –

  1. The Electronic configuration, occurrence, and characteristics of transition metals
  2. The General trends in properties of the first-row transition metals –
  3. The Chemical reactivity and lanthanoid contraction and its consequences
  4. The Electronic configuration, oxidation states, and comparison with lanthanoids

Coordination Compounds –

  1. Coordination number, color, magnetic properties and shapes ( very important)
  2. IUPAC nomenclature of mononuclear coordination compounds
  3. Bonding
  4. Werner’s theory
  5. VBT
  6. CFT
  7. Stereoisomerism

Haloalkanes and Haloarenes –


  1. Nomenclature
  2. The Nature of C-X bond
  3. The Mechanism of substitution reactions


  1. The Nature of C -X bond,
  2. Substitution reactions (Directive influence of halogen in monosubstituted compounds only.

Alcohols, Phenols, and Ethers –

  1. Alcohols:
  2. Nomenclature
  3. The Methods of preparation
  4. The Physical and chemical properties (primary alcohols only)
  5. The Identification of primary, secondary and tertiary alcohols
  6. The Mechanism of dehydration uses with special reference to methanol and ethanol


  1. Nomenclature
  2. The Methods of preparation
  3. The Physical and chemical properties
  4. The Acidic nature of phenol
  5. The Electrophilic substitution reactions


  1. Nomenclature
  2. The Methods of preparation
  3. The Physical and chemical properties

Aldehydes, Ketones and Carboxylic Acids

Aldehydes and Ketones:

  1. Nomenclature,
  2. The Nature of carbonyl group,
  3. The Methods of preparation,
  4. The Physical and chemical properties,
  5. The Mechanism of Nucleophilic addition
  6. The Reactivity of alpha hydrogen in Aldehydes

Carboxylic Acids:

  1. Nomenclature
  2. Acidic nature
  3. The Methods of preparation
  4. The Physical and chemical properties

Organic compounds containing Nitrogen


  1. Nomenclature
  2. The Methods of preparation (most important)
  3. The Physical and chemical properties
  4. Identification of primary, secondary and tertiary amines

Diazonium salts:

  1. Preparation
  2. The Chemical reactions and importance in synthetic organic chemistry



  1. Classification (aldoses and ketoses)
  2. Monosaccharides (glucose and fructose)
  3. The D-L configuration oligosaccharides (sucrose, lactose, maltose)
  4. Polysaccharides (starch, cellulose, glycogen)
  5. The Importance of carbohydrates

Proteins –

  1. An Elementary idea of – amino acids, peptide bond, polypeptides, proteins,
  2. The Structure of proteins – primary, secondary, tertiary structure and quaternary structures
  3. The Denaturation of proteins
  4. Nucleic Acids: DNA and RNA

Classification of polymers –

  1. Natural and synthetic
  2. The Methods of polymerization
  3. Copolymerization
  4. Some important polymers:

Chemistry in Everyday Life

Chemicals in medicines –

  1. Analgesics
  2. Tranquilizers antiseptics
  3. Disinfectants
  4. Antimicrobials
  5. Antifertility drugs
  6. Antibiotics
  7. Antacids
  8. Antihistamines

Chemicals in food –

  1. Preservations
  2. Artificial sweetening agents
  3. Elementary idea of antioxidants

Cleansing agents –

  1. Soaps and detergents
  2. Cleansing action