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Latest CBSE Class 12 Syllabus of Chemistry 2018-19

CBSE has released the CBSE Class 12 Syllabus of Chemistry (Code No. 043) for the session 2018-19. The new session has started and board updated the new syllabus. There is no change made in the syllabus and exam pattern.

The question paper will be of 70 marks. Practicals will be conducted of 30 marks.

The Question paper will consist of 26 questions. All questions would be compulsory. However, there is an internal choice in one question of 2 marks weightage, one question of 3 marks weightage and all the three questions of 5 marks weightage.

Unit

Marks
I
Solid State11
II
Solutions
III
Electrochemistry 
IV
Chemical Kinetics
V
Surface Chemistry 
VI
General Principles and Processes of Isolation of Elements21
VII
p -Block Elements 
VIII
d -and f -Block Elements 
IX
Coordination Compounds
X
Haloalkanes and Haloarenes 16
XI
Alcohols, Phenols and Ethers
XII
Aldehydes, Ketones and Carboxylic Acids
XIII
Organic Compounds containing Nitrogen 
XIV
Biomolecules
XIV
Polymers
XIV
Chemistry in Everyday Life 

Total
70

Question Wise Breakup:

Type of Question
Mark per Question
Total No. of Questions
Total Marks
VSA
1
5
05
SA-I
2
5
10
SA-II
3
12
36
VBQ
4
1
04
LA
5
3
15
Total

26
70

Practicals: 30 Marks

Volumetric Analysis8 Marks
Salt Analysis8 Marks
Content Based Experiment6 Marks
Project Work4 Marks
Class record and viva4 Marks
Total30 Marks

List of Experiments

Micro-chemical methods are available for several of the practical experiments.
Wherever possible, such techniques should be used.

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 Iodide ions.
(ii) Reaction between Potassium Iodate, (KIO3) and Sodium Sulphite: (Na2SO3) using starch solution as indicator (clock reaction).

C. Thermochemistry
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/Zn2+|| Cu2+/Cu with change in concentration of electrolytes (CuSO4 or ZnSO4) at room temperature.

E. Chromatography
i) Separation of pigments from extracts of leaves and flowers by paper chromatography and determination of Rf values.
ii) Separation of constituents present in an inorganic mixture containing two cations only
(constituents having large difference in Rf values to be provided).

F. Preparation of Inorganic Compounds
i) Preparation of double salt of Ferrous Ammonium Sulphate or Potash Alum.
ii) Preparation of Potassium Ferric Oxalate.

G. Preparation of Organic Compounds
Preparation of any one of the following compounds
i) Acetanilide
ii) Di -benzal Acetone
iii) p-Nitroacetanilide
iv) Aniline yellow or 2 - Naphthol Aniline dye.

H. Tests for the functional groups present in organic compounds:
Unsaturation, alcoholic, phenolic, aldehydic, ketonic, carboxylic and amino (Primary) groups.

I. Characteristic tests of carbohydrates, fats and proteins in pure samples and their detection in given
food stuffs.

J. Determination of concentration/ molarity of KMnO4 solution by titrating it against a standard solution of:
i) Oxalic acid,ss
ii) Ferrous Ammonium Sulphate
(Students will be required to prepare standard solutions by weighing themselves).

K. Qualitative Analysis
(a) Determination of one anion and one cation in a given salt
Cations- Pb2+, Cu2+, Al3+, Fe3+, Mn2+, Ni2+, Zn2+, Co2+, Ca2+, Sr2+,Ba2+, Mg2+
, [NH4]+Anions – [CO3]2-, S2-, [SO3]2-, [SO4]2-, [NO3]-, Cl-,Br-, I-, [PO4]3-, [C2O4]2-, CH3COO-
(Note: Insoluble salts excluded)
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