The binary number system uses digits
- A. 0–9
- B. 0 and 1
- C. A–F only
- D. 1–8
View the correct answer
Correct option: B — 0 and 1
Each place is a power of 2.
Class 9 · कंप्यूटर · 255+ Q&A
Class 9 Computer — Number System Important Questions with Answers (MCQ test)
IT basics, hardware, software, internet safety and MS Office for Class 9. Showing 14 of 14 on page 1 / 1.
- अध्याय चुनें
- MCQ टेस्ट दें — उत्तर पहले छिपा है
- View answer से मिलाएँ
- अगला पेज · एक स्क्रीन पर 20 प्रश्न
All chapters
1. Hardware
2. Software
3. Operating System
4. Memory and Storage
5. Input and Output
6. Networking
7. Internet and Email
8. Cyber Safety
9. MS Office
10. Number System
11. IPR and Digital Ethics
Page 1 of 1 · 14 questions in this view
Decimal 5 in binary is
- A. 100
- B. 101
- C. 111
- D. 110
View the correct answer
Correct option: B — 101
4+1 = 5 → 101.
Binary 1101 in decimal is
- A. 11
- B. 13
- C. 8
- D. 15
View the correct answer
Correct option: B — 13
8+4+1 = 13.
One byte can represent how many distinct values?
- A. 8
- B. 256
- C. 1024
- D. 2
View the correct answer
Correct option: B — 256
2^8 = 256 (0 to 255).
ASCII is used to
- A. cool laptops
- B. code characters as numbers
- C. measure UPS watts
- D. draw fibre maps
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Correct option: B — code characters as numbers
A letter becomes a code the computer can store.
Hexadecimal uses base
- A. 2
- B. 8
- C. 10
- D. 16
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Correct option: D — 16
Digits 0–9 and A–F; often shown for colours and memory.
Octal system base is
- A. 2
- B. 8
- C. 10
- D. 16
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Correct option: B — 8
Digits 0–7.
LSB means
- A. Large Software Bundle
- B. Least Significant Bit
- C. Local School Browser
- D. Long Slide Bar
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Correct option: B — Least Significant Bit
The rightmost bit in the usual writing of a binary number.
Decimal 8 in binary is
- A. 1000
- B. 1001
- C. 111
- D. 1010
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Correct option: A — 1000
2^3 = 8 → 1000.
Binary 10000 in decimal is
- A. 8
- B. 16
- C. 32
- D. 10
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Correct option: B — 16
2^4 = 16.
The place values in binary from right are
- A. 1, 2, 4, 8, 16, …
- B. 1, 10, 100
- C. 1, 8, 64
- D. 1, 16, 256 only
View the correct answer
Correct option: A — 1, 2, 4, 8, 16, …
Powers of two.
Convert decimal 2 to binary.
- A. 10
- B. 11
- C. 01 as the only 2-bit? 10 is 2
- D. 100
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Correct option: A — 10
2 = 10 in binary.
How many bits in 2 bytes?
- A. 2
- B. 8
- C. 16
- D. 1024
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Correct option: C — 16
2 × 8 = 16 bits.
MSB is the
- A. middle school book
- B. Most Significant Bit — usually the leftmost
- C. mail server box
- D. macro start button
View the correct answer
Correct option: B — Most Significant Bit — usually the leftmost
Opposite of LSB.
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Class 9 Computer में कितने प्रश्न हैं? 255 महत्वपूर्ण प्रश्न: 174 MCQ, 50 लघु, 31 दीर्घ।
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