How to Write Stepwise Answers for Encoding Schemes and Number System (Class 11)
FAQs on Class 11 Computer Science NCERT Solutions Chapter 2: Encoding Schemes and Number System
1. What is covered in Class 11 Computer Science Chapter 2 – Encoding Schemes and Number System?
Class 11 Computer Science Chapter 2 covers essential concepts of encoding schemes, number systems, and their applications in computer science. The main topics include:
- Understanding binary, octal, decimal, and hexadecimal number systems
- Converting numbers between different bases
- The importance and types of encoding schemes (such as ASCII and Unicode)
- Applications of encoding in data representation
- Key definitions and practice problems, as per the NCERT syllabus
2. Why are stepwise NCERT Solutions important for scoring well in Computer Science exams?
Stepwise NCERT Solutions are crucial for scoring well because they:
- Help demonstrate clear understanding, as required by the CBSE marking scheme
- Earn marks for each correct step, even if the final answer is incorrect
- Make revision easier by breaking problems into logical parts
- Ensure all key points, definitions, and formulas are included for maximum marks
3. How should I structure long or 5-marker answers in Class 11 Computer Science Chapter 2?
To structure a long answer for full marks, follow these steps:
- Begin with a precise definition or introduction
- Explain key points using bullet points or sub-headings
- Include examples, diagrams, or tables where relevant
- Underline or highlight important terms like encoding scheme, ASCII, Unicode, binary, decimal
- Summarise your answer in a short conclusion
4. Are diagrams or definitions mandatory in Encoding Schemes and Number System answers?
Yes, definitions and diagrams can be mandatory depending on the question:
- Definitions are essential for questions on key terms (e.g., ASCII, binary system)
- Diagrams or conversion tables often fetch marks in explanation-based or stepwise questions
- Always check if a question asks for a labeled example or schematic; include diagrams if instructed
5. What are the most important topics in Computer Science Chapter 2 for exams?
For CBSE exams, the most important topics in Chapter 2 Encoding Schemes and Number System are:
- Types of number systems: binary, octal, decimal, hexadecimal
- Number system conversions (e.g., decimal to binary)
- Encoding schemes and their examples (ASCII, Unicode)
- Representation of data using binary codes
- Key definitions and solved numerical problems from the NCERT exercises
6. Where can I download the free PDF of Class 11 Computer Science Chapter 2 NCERT Solutions?
You can download the Class 11 Computer Science Chapter 2 NCERT Solutions PDF for free directly from this page using the provided PDF download button. This helps students study offline and revise anytime.
7. How do I prepare diagrams or conversion tables for Encoding Schemes and Number System?
Prepare diagrams and tables for this chapter by:
- Drawing neat conversion tables for number systems (e.g., decimal-binary conversion)
- Labeling all parts clearly (titles, base values, arrows for conversion direction)
- Practicing frequently asked diagrams like ASCII table snippets or stepwise conversion lines
8. Are NCERT Solutions enough for Class 11 Computer Science exams?
NCERT Solutions are sufficient for understanding CBSE exam patterns and concepts in Computer Science. However, for better performance:
- Thoroughly practice all intext and back exercise questions
- Go through exemplar and previous years’ questions for extra practice
- Revise definitions, key diagrams, and conversion methodologies
9. What are the common mistakes to avoid in Number System conversion problems?
To avoid losing marks in Number System conversion problems:
- Write all steps (don’t skip showing carry-over or borrow steps in subtraction)
- Label your conversion clearly (specify from and to base)
- Check calculations twice, especially with zeros and powers of two
- Use neat tables if needed for clarity
10. How is data represented inside a computer using encoding schemes?
Data in computers is represented using binary codes with specific encoding schemes:
- Characters (letters, digits) are stored as binary values defined by encoding schemes like ASCII and Unicode
- Each symbol is mapped to a unique binary code
- Encoding ensures compatibility, data exchange, and error minimisation
11. Do examiners award partial marks for correct steps even if the final answer is wrong?
Yes, in CBSE exams, partial marks are awarded for each correct step shown in numerical or conversion questions. It’s crucial to write every step to maximise your score, even if the final answer is incorrect.
12. How should I revise Class 11 Computer Science Chapter 2 Encoding Schemes and Number System quickly?
For quick revision:
- Read through key definitions and formulae
- Practice conversion problems and encoding tables
- Review solved NCERT examples and highlighted diagrams
- Use chapterwise quick notes or flashcards for important points
