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Class 9 Computer Science Chapter 2 MCQs — Number Systems

Class 9 Computer Science · Chapter 2 · Chapter practice

Practise this chapter online, check each answer and review your result. The current bank contains 40 objective questions for this chapter and medium.

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Sample practice questions

What does ASCII stand for?

  1. Advanced System Control for Internal Instructions
  2. American Standard Code for Information Interchange
  3. American Scientific Code for Internet Interaction
  4. Automatic Standard Computer Information Input
Answer / جواب

American Standard Code for Information Interchange

Which is a valid binary integer?

  1. 11011₂
  2. 11012₂
  3. 1101A₂
  4. 12010₂
Answer / جواب

11011₂

How many bits does standard ASCII use per character?

  1. 4
  2. 8
  3. 16
  4. 7
Answer / جواب

7

Why is Unicode useful for text?

  1. It stores only decimal numbers
  2. It is used only for audio compression
  3. It represents characters from many languages
  4. It supports only English capital letters
Answer / جواب

It represents characters from many languages

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