Class 12 Chemistry Sample Papers, Notes, Important Questions

If you are looking for Class 12 Chemistry model papers, periodic test papers, Important Questions, MCQ Questions, Sample Papers, Study Notes, Hot Questions, Worksheets, Class Assignments, Practice Exercises, Word Problems, Previous Year question papers, Solved papers, Unit tests and other related study material for exam preparation then you are at the right place.

Total Papers : 123

Total Papers : 123

Question bank of Class 12

On Ribblu one can get immense collections of CBSE Question Bank for Class 12 Chemistry which includes important questions 12th Class Chapter wise as per NCERT syllabus. Students while preparing for final exams must practice all the important questions of 12th grade Chemistry. All these Important Questions chapter wise have been uploaded by various registered users.

Question bank of Class 12 Chemistry

Sample Papers of Class 12

By Solving CBSE Sample Papers for Class 12 Chemistry, immensely helps students in preparing for the final exams. These Class 12 sample papers and 12th grade sample question papers are prepared in accordance with the latest syllabus and guidelines that are issued by the central board. If one wants to have a clear idea of how the final exam papers would be in terms of level of difficulty, time and other aspects then, all students must make sure that they do sample papers once their course revision is finished.

Sample Papers of Class 12 Chemistry

Revision Notes of Class 12

CBSE Revision Notes For Class 12 Chemistry are very important for quick revision to recall all that has been learned throughout the year. On Ribblu.com one can find Study Key Notes or Revision notes for all subjects of 12th Class STD and which includes Chemistry as per CBSE and NCERT syllabus. Notes make this process of recall easy. One can easily revise the precise notes in a day or two. Once they get the hint, the students are quick to recall the entire material.

Revision Notes of Class 12 Chemistry

Question Papers of Class 12

If you are looking for CBSE Question Papers for Class 12 Chemistry then you are at the right place. On Ribblu you will find Class 12 Chemistry Question Papers, 12th class previous year board question papers and MCQs Paper for Class 12 Chemistry, as per NCERT Syllabus. Solving them gives students the clear idea of how the final exam papers would be in terms of level of difficulty, time and other aspects, so all students must attempt as many Chemistry Question Papers as possible once their course revision is finished so as to get the best score in final exams

Question Papers of Class 12 Chemistry

Supplementary Helping Aids For CBSE Exams Preparation.

Indian Education system primarily consists of two parts one being studying the subjects and the other one is appearing for exams and tests. All these exams are conducted by schools for various classes to gauge how much the students have understood , learned and what is their capability score in any particular subject. But sometimes even after understanding the topics fully there are chances the students don’t do well in exams because of lack of preparation from the examination perspective. The reason being that one needs to prepare for exams in a particular way and for that previous question papers, sample papers, worksheets and unit test papers play a major role.

The important factors in performing well in the exams, apart from, studying day & night, grasping everything and retaining everything, is, to be able to study smart and in a proper disciplined manner, so that all the efforts translate into performance.

When preparing for your exams every expert recommends that students should invest more time and effort into solving question papers and worksheets from previous year

This practice not only will familiarise the students with the format of the question paper, it will also teach them the discipline of answering the entire question paper within the time allotted to you at the examination. The more one solves these, the more confidence will be gained towards achievement of highest score. Often it happens that in the exams the children know the solution of every question but due to lack of time they miss some portions. So it is imperative to practice before hand so that everything is attempted on time in main exams

Class 12 Chemistry Term Wise Syllabus

Unit-I: Solid State (23 Marks)

Classification of solids based on different binding forces : molecular, ionic, covalent and metallic solids, amorphous and crystalline solids (elementary idea). Unit cell in two dimensional and three dimensional lattices, calculation of density of unit cell, packing in solids, packing efficiency, voids, number of atoms per unit cell in a cubic unit cell, point defects, electrical and magnetic properties. Band theory of metals, conductors, semiconductors and insulators and n and p type semiconductors.

Unit-II: Solutions (23 Marks)

Types of solutions, expression of concentration of solutions of solids in liquids, solubility of gases in liquids, solid solutions, colligative properties - relative lowering of vapour pressure, Raoult’s law, elevation of boiling point, depression of freezing point, osmotic pressure, determination of molecular masses using colligative properties, abnormal molecular mass, Van't Hoff factor.

Unit-III: Electrochemistry (23 Marks)

Redox reactions, conductance in electrolytic solutions, specific and molar conductivity, variations of conductivity with concentration, Kohlrausch’s Law, electrolysis and law of electrolysis (elementary idea), dry cell-electrolytic cells and Galvanic cells, lead accumulator, EMF of a cell, standard electrode potential, Nernst equation and its application to chemical cells, Relation between Gibbs energy change and EMF of a cell, fuel cells, corrosion.

Unit-IV: Chemical Kinetics (23 Marks)

Rate of a reaction (Average and instantaneous), factors affecting rate of reaction : concentration, temperature, catalyst; order and molecularity of a reaction, rate law and specific rate constant,integrated rate equations and half life (only for zero and first order reactions), concept of collision theory (elementary idea, no mathematical treatment). Activation energy, Arrhenious equation.

Unit-V: Surface Chemistry (23 Marks)

Adsorption physisorption and chemisorption, factors affecting adsorption of gases on solids, catalysis, homogenous and heterogenous activity and selectivity; enzyme catalysis colloidal state distinction between true solutions, colloids and suspension; lyophilic, lyophobic multimolecular and macromolecular colloids; properties of colloids; Tyndall effect, Brownian movement, electrophoresis, coagulation, emulsion - types of emulsions.

Unit-VI: General Principles and Processes of Isolation of Elements (19 Marks)

Principles and methods of extraction - concentration, oxidation, reduction - electrolytic method and refining; occurrence and principles of extraction of aluminium, copper, zinc and iron.

Unit-VII: p-Block Elements (19 Marks)

Group-15 Elements : General introduction, electronic confguration, occurrence, oxidation states, trends in physical and chemical properties; Nitrogen, preparation properties and uses; compounds of Nitrogen, preparation and properties of Ammonia and Nitric Acid, Oxides of Nitrogen(Structure only) ; Phosphorus - allotropic forms, compounds of Phosphorus : Preparation and Properties of Phosphine, Halides and Oxoacids (elementary idea only).

Group 16 Elements : General introduction, electronic confguration, oxidation states, occurrence, trends in physical and chemical properties, dioxygen : Preparation, Properties and uses, classifcation of Oxides, Ozone, Sulphur -allotropic forms; compounds of Sulphur : Preparation Properties and uses of Sulphur-dioxide, Sulphuric Acid : industrial process of manufacture, properties and uses; Oxoacids of Sulphur (Structures only).

Group 17 Elements : General introduction, electronic confguration, oxidation states, occurrence, trends in physical and chemical properties; compounds of halogens, Preparation, properties and uses of Chlorine and Hydrochloric acid, interhalogen compounds, Oxoacids of halogens (structures only).

Group 18 Elements : General introduction, electronic confguration, occurrence, trends in physical and chemical properties, uses.

Unit VIII: d- and f-Block Elements (19 Marks)

General introduction, electronic confguration, occurrence and characteristics of transition metals, general trends in properties of the frst row transition metals - metallic character, ionization enthalpy, oxidation states, ionic radii, colour, catalytic property, magnetic properties, interstitial compounds, alloy formation, preparation and properties of K2Cr2O7 and KMnO4.

Lanthanoids - Electronic confguration, oxidation states, chemical reactivity and lanthanoid contraction and its consequences.

Actinoids - Electronic confguration, oxidation states and comparison with lanthanoids.

Unit IX: Coordination Compounds (19 Marks)

Coordination compounds - Introduction, ligands, coordination number, colour, magnetic properties and shapes, IUPAC nomenclature of mononuclear coordination compounds. Bonding, Werner’s theory, VBT, and CFT; structure and stereoisomerism, importance of coordination compounds (in qualitative analysis, extraction of metals and biological system).

Unit X: Haloalkanes and Haloarenes (28 Marks)

Haloalkanes - Nomenclature, nature of C-X bond, physical and chemical properties, mechanism of substitution reactions, optical rotation.

Haloarenes - Nature of C-X bond, substitution reactions (Directive infuence of halogen in monosubstituted compounds only).

Uses and environmental effects of - dichloromethane, trichloromethane, tetrachloromethane, iodoform, freons, DDT.

Unit XI: Alcohols, Phenols and Ethers (28 Marks)

Alcohols - Nomenclature, methods of preparation, physical and chemical properties (of primary alcohols only), identifcation of primary, secondary and tertiary alcohols, mechanism of dehydration, uses with special reference to methanol and ethanol.

Phenols - Nomenclature, methods of preparation, physical and chemical properties, acidic nature of phenol, electrophilic substitution reactions, uses of phenols.

Ethers - Nomenclature, methods of preparation, physical and chemical properties, uses.

Unit XII: Aldehydes, Ketones and Carboxylic Acids (28 Marks)

Aldehydes and Ketones - Nomenclature, nature of carbonyl group, methods of preparation, physical and chemical properties, mechanism of nucleophilic addition, reactivity of alpha hydrogen in aldehydes, uses.

Carboxylic Acids - Nomenclature, methods of preparation, physical and chemical properties, acidic nature of phenol, electrophilic substitution reactions, uses of phenols.

Unit XIII: Organic compounds containing Nitrogen (28 Marks)

Amines - Nomenclature, classifcation, structure, methods of preparation, physical and chemical properties, uses, identifcation of primary, secondary and tertiary amines.

Cyanides and Isocyanides - will be mentioned at relevant places in text.

Diazonium salts - Preparation, chemical reactions and importance in synthetic organic chemistry.

Unit XIV: Biomolecules (28 Marks)

Carbohydrates - Classifcation (aldoses and ketoses), monosaccahrides (glucose and fructose), D-L confguration oligosaccharides (sucrose, lactose, maltose), polysaccharides (starch, cellulose, glycogen); Importance of carbohydrates.

Proteins - -Elementary idea of - amino acids, peptide bond, polypeptides, proteins, structure of proteins - primary, secondary, tertiary structure and quaternary structures (qualitative idea only), denaturation of proteins; enzymes. Hormones - Elementary idea excluding structure.

Vitamins - Classifcation and functions. Nucleic Acids : DNA and RNA.

Unit XV: Polymers (28 Marks)

Classifcation - natural and synthetic, methods of polymerization (addition and condensation), copolymerization, some important polymers : natural and synthetic like polythene, nylon polyesters, bakelite, rubber. Biodegradable and non-biodegradable polymers.

Unit XVI: Chemistry in Everyday life (28 Marks)

Chemicals in medicines - analgesics, tranquilizers antiseptics, disinfectants, antimicrobials, antifertility drugs, antibiotics, antacids, antihistamines.

Chemicals in food - preservatives, artifcial sweetening agents, elementary idea of antioxidants. Cleansing agents- soaps and detergents, cleansing action.

Chemistry Question Paper Design - Class XII

Typology of Questions

Remembering- (Knowledge based Simple recall questions, to know specific facts, terms, concepts, principles, or theories, Identify, define, or recite, information)

Number of Questions Asked that are Very Short Answer Type Question = 2

Number of Questions Asked that are Short Answer Type Questions = 2

Number of Questions Asked that are Value Based Type Questions = 0

Number of Questions Asked that are Long Answer Type Questions Asked = 0

Total Marks = 7

Total Weightage = 10%

Typology of Questions

Understanding- Comprehension -to be familiar with meaning and to understand conceptually, interpret, compare, contrast, explain, paraphrase information)

Number of Questions Asked that are Very Short Answer Type Question = 0

Number of Questions Asked that are Short Answer Type Questions = 6

Number of Questions Asked that are Value Based Type Questions = 0

Number of Questions Asked that are Long Answer Type Questions Asked = 1

Total Marks = 21

Total Weightage = 30%

Typology of Questions

Application (Use abstract information in concrete situation, to apply knowledge to new situations, Use given content to interpret a situation, provide an example, or solve a problem)

Number of Questions Asked that are Very Short Answer Type Question = 0

Number of Questions Asked that are Short Answer Type Questions = 6

Number of Questions Asked that are Value Based Type Questions = 0

Number of Questions Asked that are Long Answer Type Questions Asked = 1

Total Marks = 21

Total Weightage = 30%

Typology of Questions

High Order Thinking Skills (Analysis and Synthesis- Classify, compare, contrast, or differentiate between different pieces of information, Organize and/or integrate unique pieces of information from a variety of sources)

Number of Questions Asked that are Very Short Answer Type Question = 2

Number of Questions Asked that are Short Answer Type Questions = 1

Number of Questions Asked that are Value Based Type Questions = 0

Number of Questions Asked that are Long Answer Type Questions Asked = 1

Total Marks = 10

Total Weightage = 14%

Typology of Questions

Evaluation- (Appraise, judge, and/or justify the value or worth of a decision or outcome, or to predict outcomes based on values)

Number of Questions Asked that are Very Short Answer Type Question = 0

Number of Questions Asked that are Short Answer Type Questions = 2

Number of Questions Asked that are Value Based Type Questions = 1

Number of Questions Asked that are Long Answer Type Questions Asked = 0

Total Marks = 11

Total Weightage = 16%

Upload Papers & Earn 50 Points

Upload papers and the more your paper get downloaded the more you earn the points

You may send papers on email support@ribblu.co.in along with userid

Rules and regulations for uploads