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Chemistry:

Unit-I - Solid State

The questions are likely to be asked on the metallic solids in the classification of solids based on different binding forces, numerical problems on the calculation of density of unit cell and electron sea model.

Unit-II - Solutions

Students can expect one mark questions on types of solutions. The other important topics are Henry's law, depression of freezing point, Van't Hoff factor and osmotic pressure.

Unit-III - Electrochemistry

One can expect one mark questions on conductance in electrolytic solutions and Kohlrausch's Law. The Faradays' laws, lead accumulator and standard electrode potential are important.

Unit-IV - Chemical Kinetics

The rate of reaction, concept of collision theory, effect of temperature in activation energy, Arrhenious equation and concept of collision theory are very important.

Unit-V - Surface Chemistry

The adsorption - physisorption and chemisorption are very important along with Tyndall effect and Brownian movement. Students should also focus on types of emulsions.

Unit-VI - Isolation of Elements

The principles and methods of extraction - concentration, oxidation, reduction are very important.

Unit-VII - p-Block Elements

In the Group 15 Elements, the conceptual questions are expected this year from compounds of Nitrogen and preparation properties & uses of Nitrogen. The same goes for Phosphorus as well. The questions on Ozone, Sulphur and Sulphuric acids are expected in the Group 16 Elements. While coming to the Group 17 Elements, compounds of halogens and oxoacids of halogens are crucial.

Unit-VIII - d-Block And f-Block

Elements In the first row transition metals, ionization enthalpy, oxidation states and interstitial compounds are important. Take a close look on the topics related to Lanthanoids and Actinoids.

Unit-IX - Coordination Compounds

Students are advised to revise the coordination number, colour, magnetic properties and shapes thoroughly. The structure and stereo isomerism are also equally important.

Unit-X - Haloalkanes and Haloarenes

Read the nomenclature, nature of C-X bond, optical rotation and uses & environmental effects of - dichloromethane, trichloromethane, tetrachloromethane, iodoform, freons and DDT.

Unit-XI - Alcohols, Phenols and Ethers

Read thoroughly the nomenclature, methods of preparation, uses and properties of Alcohols, Phenols and Ethers.

Unit-XII - Aldehydes, Ketones and Carboxylic Acids

Not much important in this unit. However, give special attention to carboxylic acids uses and mechanism of Nucleophilic addition.

Unit-XIII - Organic Compounds containing Nitrogen The Amines

methods of preparation is the most important besides identification of primary, secondary and tertiary amines. The chemical reactions and importance in synthetic organic chemistry is also important.

Unit-XIV - Biomolecules

The classification of aldoses and ketoses, denaturations of proteins, classification of vitamins and nucleic acids - DNA and RNA are important.

Unit-XV - Polymers

Give utmost importance to the methods of polymerization, copolymerization and bakelite.

Unit-XVI - Chemistry in Everyday Life

In the chemicals in medicine, focus on antibiotics and antacids. In the chemicals in food, give importance to artificial sweetening agents. However, soaps, detergents and cleansing action are important in the cleansing agents.

I hope this was helpful. Thank you!

hello aspirant!
Hope you are doing well!

There is a pattern in board examination. Many a times the chapters are fixed from which you get high marks question. You can idea of this by going through previous year question papers and find the patter. but this is always not followed

1. CBSE Class 12 Chemistry Sample Paper 2020- https://school.careers360.com/download/sample-papers/cbse-class-12-chemistry-sample-paper-2020

2.CBSE Class 12 Physics Sample Paper 2020

https://school.careers360.com/download/sample-papers/cbse-class-12-physics-sample-paper-2020

You can also check previous year question paper available in careers360 website