Subject: Computer Science

There will be two papers in the subject:

Paper I: Theory- 3 hours …100 marks

Paper II: Practical- 3 hours …100 marks

PAPER I-THEORY

Paper 1 shall be of 3 hours duration and be divided into two parts.

Part I (30 marks): This part will consist of compulsory short answer questions, testing knowledge, application and skills relating to the entire syllabus.

Part II (70 marks): This part will be divided into three Sections, A, B and C. Candidates are required to answer three questions out of four from Section A and two questions out of three in each of the Sections B and C. Each question in this part shall carry 10 marks.

SECTION A

1. Boolean Algebra

(a) Propositional logic, well formed formulae, truth values and interpretation of well formed formulae (wff), truth tables, satisfiable, unsatisfiable and valid formulae. Equivalence laws and their use in simplifying wffs.

(b) Binary valued quantities; basic postulates of Boolean algebra; operations AND, OR and NOT; truth tables.

(c) Basic theorems of Boolean algebra (e.g. Duality, idempotence, commutativity, associativity, distributivity, operations with 0 and 1, complements, absorption, involution); De Morgan’s theorem and its applications; reducing Boolean expressions to sum of products and product of sums forms; Karnaugh maps (up to four variables).

2. Computer Hardware

(a) Elementary logic gates (NOT, AND, OR, NAND, NOR, XOR, XNOR) and their use in circuits.

(b) Applications of Boolean algebra and logic gates to half adders, full adders, encoders, decoders, multiplexers, NAND, NOR as universal gates.

CONTENTS

Foreword

Introduction

List of Experiments

Categories of Practical Skills

Design of Question Paper

Sample Question Paper I

Scoring Key - I

Sample Question Paper II

Scoring Key - II

Sample Question Paper III

Scoring Key – III

Acknowledgements

Accounting for Business II (Practical Manual)

for Class XII

To Download Click Following links:

Punjabi Text Book : Kaav Yatra

(Class XII)

Contents :

Click Here to Download Full PDF

The Central Board of Secondary Education (CBSE) has been organizing Adolescence Education Programme (AEP) under the directives of MHRD since 2005. The Board is implementing AEP training programme in independent schools affiliated to the Board. AEP was launched to address Adolescents needs especially in relation to their Health concerns and for the holistic development of their personality.

Subject- Optics Paper II (Set-1)

File Size: 500 KB

Subject- Ophthalmic Techniques (Vocational) Biology (Set-1)

Subject- Office Procedure and Practices (Set-1)

File Size: 1.45 MB

Subject- Office Communication Paper III (Set-1)

File Size: 1.10 MB

Subject: Engineering Science

There will be one paper of three hours duration of 100 marks.

Section A of the paper will contain short answer questions, all of which are to be answered.

Section B of the paper will contain six questions of which candidates must answer five questions.

Note: All questions will be set in the S.I. System. The unit abbreviations to be used in all question papers in this subject will be those contained in the Guide to the use of International System (SI) units SP; 5-1969 (Published by the Indian Standards Institution). A list of common abbreviations is printed at the end of the Physics syllabus.

1. Strength of materials. Simple problems. Hooke's law, stress and strain. Young's modulus. Tension and compression. Elastic limit. Ultimate strength. Factors of safety.

2. Friction. Conditions affecting friction. Lubrication. Conditions should include types of materials, their surface finish and wetness or dryness.