Chemistry Exam Sample Paper 2012-2013

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SYLLABUS CHEMISTRY (043) CLASS-XII – (2012-13)

Annexure - ‘ I ’

S.No. 1. 2. 3. 4.

Type of Question Long Answers (LA) Short Answers-II (SA II) Short Answers-I (SA-I) Very Short Answer (VSA) Total

Marks for No. of Total Marks each Question Questions 5 3 2 1 3 9 10 08 30 15 27 20 08 70 Weightage 4 5 5 5 4 3 8 5 3 4 4 6 4 4 3 3 70 Total:

S.No. UNIT 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. Solid State Solutions Electrochemistry Chemical Kinetics Surface Chemistry General Principles and Processes of Isolation of Elements p-block Elements d & f- Block Elements Co-ordination Compounds Haloalkanes and Haloarenes Alcohols, Phenols & Ethers Aldehydes, Ketones & Carboxylic Acids Organic Compounds Containing Nitrogen Biomolecules Polymers Chemistry in Everyday Life

The question paper will include value based question(s) to the extent of 3-5 marks.

162

DESIGN OF QUESTION PAPER CHEMISTRY (043) CLASS-XII – (2012-13) One Paper Unit No. Unit I Unit II Unit III Unit IV Unit V Unit VI Unit VII Unit VIII Unit IX Unit X Unit XI Unit XII Unit XIII Unit XIV Unit XV Unit XVI Title Solid State Solutions Electrochemistry Chemical Kinetics Surface Chemistry General Principles and Processes of Isolation of Elements p -Block Elements d -and f -Block Elements Coordination Compounds Haloalkanes and Haloarenes Alcohols, Phenols and Ethers Aldehydes, Ketons and Carboxylic Acids Organic Compounds containing Nitrogen Biomolecules Polymers Chemistry in Everyday Life Total: Time: 3 Hours

Total Periods : 180 70 marks Marks 4 5 5 5 4 3 8 5 3 4 4 6 4 4 3 3 70

The question paper will include value based question(s) to the extent of 3-5 marks.

Unit I: Solid State

(Periods 12)

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 & p type semiconductors.

Unit II: Solutions

(Periods 12)

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. 163

Unit III: Electrochemistry

(Periods 14)

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

(Periods 12)

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

(Periods 8)

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;...
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