class 12 chemistry deleted syllabus

 CLASS -XII
S.No Unit Portion to be Reduced

1 Solid State

 Electrical and magnetic properties. Band theory of metals,

conductors, semiconductors and insulators and n and p type

semi conductors.

2 Solutions

 Abnormal molecular mass, Van't Hoff factor

3 Electrochemistry

Lead accumulator, fuel cells, corrosion, law of electrolysis

(elementary idea), dry cell- electrolytic cells and Galvaniccells,

4 Chemical

Kinetics

Concept of collision theory (elementary idea, no

mathematical treatment), activation energy, Arrhenius equation.

5. Surface Chemistry

emulsion - 

types of emulsions, catalysis: homogenous and

heterogeneous, activity and selectivity of solid catalysts;

enzyme catalysis,

6 General Principles and Processes of Isolation of Elements

Entire unit

7 p-Block

Elements

Preparation and properties of Phosphine, Sulphuric Acid:

industrial process of manufacture, Oxides of Nitrogen

(Structure only); Phosphorus - allotropic forms, compounds of

Phosphorus: Preparation and properties of Halides and

Oxo acids (elementary idea only).

8 d and f Block

Elements

Chemical reactivity of lanthanoids, Actinoids -Electronic

configuration, oxidation states and comparison with lanthanoids.

Preparation and properties of KMnO4 and K2Cr2O7

9 Coordination

Compounds

Structure and stereoisomerism, importance of coordination

compounds (in qualitative analysis, extraction of metals and

biological system).

10 Haloalkanes and Haloarenes

Uses and environmental effects of -dichloromethane,

trichloromethane, tetrachloromethane, iodoform, freons, DDT.

11 Alcohols,

Phenols and

Ethers

uses with special reference to methanol and ethanol.

12 Aldehydes,

Ketones and

Carboxylic

Acid

---

13 Amines Diazonium salts

:

 Preparation, chemical reactions and

importance in synthetic organic chemistry.

14 Biomolecules

 Oligosaccharides (sucrose, lactose, maltose), polysaccharides

(starch, cellulose, glycogen), importance of carbohydrates.

Vitamins– classification and functions. Enzymes. Hormones -

Elementary idea excluding structure.

15 Polymers

 entire chapter

16 Chemistryin

Everydaylife

entire chapter

Practical

Following portions should be considered deleted.

A. Surface Chemistry

a. Preparation of one lyophilic and one lyophobic sol Lyophilic sol - starch, egg albumin and

gum Lyophobic sol - aluminium hydroxide, ferric hydroxide, arsenous sulphide.

b. Dialysis of sol-prepared in (a)above.

c. Study of the role of emulsifying agents in stabilizing the emulsion of different oils.

B. Chemical Kinetics

a. Effect of concentration and temperature on the rate of reaction between Sodium

Thiosulphate and Hydrochloric acid.

b. Study of reaction rates of any one of the following:

i) Reaction of Iodide ion with Hydrogen Peroxide at room temperature using different

concentration of Iodideions.

ii) Reaction between Potassium Iodate, (KIO3) and Sodium Sulphite: (Na2SO3)using starch

solution as indicator (clock reaction).

C. Thermo chemistry Any one of the following experiments

i) Enthalpy of dissolution of Copper Sulphate or Potassium Nitrate.

ii) Enthalpy of neutralization of strong acid (HCI) and strong base(NaOH).

iii) Determination of enthaply change during interaction (Hydrogen bond formation) between

Acetone and Chloroform.

D. Electrochemistry Variation of cell potential in Zn/Zn 2+|| Cu2+/Cu with change in

concentration of electrolytes (CuSO4 or ZnSO4) at room temperature.

G. Preparation of Organic Compounds Preparation of any one of the following compounds

i) Acetanilide

ii) Di-benzal Acetone

iii) p-Nitroacetanilide

Aniline yellow