Class – XII (Year 2009)
Subject – Physics - (Delhi)

General Instructions:
(i) All questions are compulsory.
(ii) Marks for each question are indicated against it.
(iii) Use of Calculators is not permitted.

1. What is sky wave propagation ?

Class – XII (Year 2011)
Subject – Physics - SET- 3

General Instructions:
(i) All questions are compulsory.
(ii) Marks for each question are indicated against it.
(iii) Use of Calculators is not permitted.

1. Define the term 'threshold frequency' in relation to photoelectric effect.

Class – XII (Year 2011)
Subject – Physics - SET- 2

General Instructions:
(i) All questions are compulsory.
(ii) Marks for each question are indicated against it.
(iii) Use of Calculators is not permitted.

1. Define the term 'wattless current'.
2. When monochromatic light travels from one medium to another its wavelength changes but frequency remains the same. Explain.

Class – XII (Year 2011)
Subject – Physics - SET - 1

General Instructions:
(i) All questions are compulsory.
(ii) Marks for each question are indicated against it.
(iii) Use of Calculators is not permitted.

1. How are radio waves produced ?
2. Write any two characteristic properties of nuclear force.
3. Draw a labelled diagram of a full wave rectifier circuit. State its working principle. Show the input- Output waveforms.

Class – XII (Year 2010)
Subject – Physics

General Instructions:
(i) All questions are compulsory.
(ii) Marks for each question are indicated against it.
(iii) Use of Calculators is not permitted.

Class – XII (Year 2010)
Subject – Chemistry (SET - 1)

General Instructions:
(i) All questions are compulsory.
(ii) Marks for each question are indicated against it.
(iii) Questions number 1 to 8 are very short-answer questions and carry 1 mark each.
(iv) Questions number 9 to 18 are short-answer questions and carry 2 marks each.
(v) Questions number 19 to 27 are also short-answer questions and carry 3 marks each.
(vi) Questions number 28 to 30 are long-answer questions and carry 5 marks each.
(vii) Use Log Tables, if necessary.

Class – XII (Year 2010)
Subject – Chemistry (SET - 1)

General Instructions:
(i) All questions are compulsory.
(ii) Marks for each question are indicated against it.
(iii) Questions number 1 to 8 are very short-answer questions and carry 1 mark each.
(iv) Questions number 9 to 18 are short-answer questions and carry 2 marks each.
(v) Questions number 19 to 27 are also short-answer questions and carry 3 marks each.
(vi) Questions number 28 to 30 are long-answer questions and carry 5 marks each.
(vii) Use Log Tables, if necessary.

Class – XII

Subject – Chemistry (SET - 3)

General Instructions:
(i) All questions are compulsory.
(ii) Marks for each question are indicated against it.
(iii) Questions number 1 to 8 are very short-answer questions and carry 1 mark each.
(iv) Questions number 9 to 18 are short-answer questions and carry 2 marks each.
(v) Questions number 19 to 27 are also short-answer questions and carry 3 marks each.
(vi) Questions number 28 to 30 are long-answer questions and carry 5 marks each.
(vii) Use Log Tables, if necessary.

Class – XII

Subject – Chemistry (SET - 2)

General Instructions:
(i) All questions are compulsory.
(ii) Marks for each question are indicated against it.
(iii) Questions number 1 to 8 are very short-answer questions and carry 1 mark each.
(iv) Questions number 9 to 18 are short-answer questions and carry 2 marks each.
(v) Questions number 19 to 27 are also short-answer questions and carry 3 marks each.
(vi) Questions number 28 to 30 are long-answer questions and carry 5 marks each.
(vii) Use Log Tables, if necessary.

Class – XII

Subject – Chemistry (SET - 1)

General Instructions:
(i) All questions are compulsory.
(ii) Marks for each question are indicated against it.
(iii) Questions number 1 to 8 are very short-answer questions and carry 1 mark each.
(iv) Questions number 9 to 18 are short-answer questions and carry 2 marks each.
(v) Questions number 19 to 27 are also short-answer questions and carry 3 marks each.
(vi) Questions number 28 to 30 are long-answer questions and carry 5 marks each.
(vii) Use Log Tables, if necessary.

CHEMISTRY

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.

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 - lectrolytic 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; Tyndall effect, Brownian movement, electrophoresis, coagulation, emulsion - types of emulsions.

Unit VI : General Principles and Processes of Isolation of Elements (Periods 8)

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 (Periods 14)

Group -15 Elements: General introduction, electronic configuration, occurrence, oxidation states, trends in physical and chemical properties; nitrogen preparation properties & 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 PCl3 , PCl5 and oxoacids (elementary idea only). Group 16 Elements: General introduction, electronic configuration, oxidation states, occurrence, trends in physical and chemical properties,dioxygen: Preparation, Properties and uses, classification of oxides, Ozone, Sulphure -allotropic forms; compounds of sulphure: 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 configuration, 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 configuration, occurrence, trends in physical and chemical properties, uses.

Unit VIII: d and f Block Elements (Periods 14)

 General introduction, electronic configuration, occurrence and characteristics of transition metals, general trends in properties of the first 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 configuration, oxidation states, chemical reactvity and lanthanoid contraction and its consequences. Actinoids - Electronic configuration, oxidation states and comparison with lanthanoids.

Class-X

Subject -German (SET - 2)

Class-X

Subject - German (SET - 1)

Class-X

Subject -French (SET - 2)

Class-X

Subject -French (SET - 1)

Units & Marks:

1. RELATIONS AND FUNCTIONS - 10 Marks
2. ALGEBRA - 13 Marks
3. CALCULUS - 44 Marks
4. VECTORS AND THREE - DIMENSIONAL GEOMETRY - 17 Marks
5. LINEAR PROGRAMMING - 06 Marks
6. PROBABILITY - 10 Marks

Total : 100 Marks

UNIT I. RELATIONS AND FUNCTIONS

1. Relations and Functions : (10) Periods
Types of relations: reflexive, symmetric, transitive and equivalence relations. One to one and onto functions, composite functions, inverse of a function. Binary operations.

2. Inverse Trigonometric Functions: (12) Periods
Definition, range, domain, principal value branches. Graphs of inverse trigonometric functions. Elementary properties of inverse trigonometric functions.

UNIT-II: ALGEBRA

1. Matrices: (18) Period
Concept, notation, order, equality, types of matrices, zero matrix, transpose of a matrix, symmetric and skew symmetric matrices. Addition, multiplication and scalar multiplication of matrices, simple properties of addition, multiplication and scalar multiplication. Non-commutativity of multiplication of matrices and existence of non-zero matrices whose product is the zero matrix (restrict to square matrices of order 2). Concept of elementary row and column operations. Invertible matrices and proof of the uniqueness of inverse, if it exists; (Here all matrices will have real entries).

2. Determinants: (20) Periods
Determinant of a square matrix (up to 3 x 3 matrices), properties of determinants, minors, cofactors and applications of determinants in finding the area of a triangle. Adjoint and inverse of a square matrix. Consistency, inconsistency and number of solutions of system of linear equations by examples, solving system of linear equations in two or three variables (having unique solution) using inverse of a matrix.