Primary vs Secondary Memory MCQs
Primary vs Secondary Memory MCQs
CBSE Class 9 – Computer Science
Class: 9 | Subject: Computer Science | Section: Computer Hardware | Topic: Primary vs Secondary Memory | CBSE Board Examination
Instructions: These Multiple Choice Questions (MCQs) are designed strictly as per the NCERT syllabus, making them ideal for CBSE Class 9 Computer Science examinations. Each question includes detailed explanations for clear concept understanding.
1. Primary memory is also known as:
Answer: b) Main Memory
Explanation: Primary memory is directly accessible by the CPU and is therefore called main memory.
Explanation: Primary memory is directly accessible by the CPU and is therefore called main memory.
2. Which is an example of primary memory?
Answer: b) RAM
Explanation: RAM is part of primary memory and stores data temporarily during processing.
Explanation: RAM is part of primary memory and stores data temporarily during processing.
3. Secondary memory is used for:
Answer: b) Permanent storage
Explanation: Secondary memory stores data permanently even after power is off.
Explanation: Secondary memory stores data permanently even after power is off.
4. Which memory is volatile?
Answer: c) RAM
Explanation: Volatile memory loses data when power is turned off.
Explanation: Volatile memory loses data when power is turned off.
5. Which is non-volatile memory?
Answer: c) ROM
Explanation: ROM retains data permanently.
Explanation: ROM retains data permanently.
6. Example of secondary storage:
Answer: c) Hard Disk
Explanation: Hard disks store large volumes of data permanently.
Explanation: Hard disks store large volumes of data permanently.
7. Primary memory is directly accessed by:
Answer: b) CPU
Explanation: CPU fetches instructions directly from primary memory.
Explanation: CPU fetches instructions directly from primary memory.
8. Which is faster?
Answer: b) Primary Memory
Explanation: Primary memory provides faster data access than secondary storage.
Explanation: Primary memory provides faster data access than secondary storage.
9. Secondary memory is also called:
Answer: c) External Memory
Explanation: It is located outside the CPU.
Explanation: It is located outside the CPU.
10. ROM is used to store:
Answer: b) BIOS
Explanation: Startup instructions are stored in ROM.
Explanation: Startup instructions are stored in ROM.
11. Which memory is temporary?
Answer: b) RAM
Explanation: RAM stores data only while computer is on.
Explanation: RAM stores data only while computer is on.
12. Optical disks are:
Answer: b) Secondary memory
Explanation: CDs/DVDs are optical secondary storage devices.
Explanation: CDs/DVDs are optical secondary storage devices.
13. Fastest primary memory:
Answer: d) Register
Explanation: Registers inside CPU are fastest.
Explanation: Registers inside CPU are fastest.
14. Pen Drive is:
Answer: b) Secondary memory
Explanation: It stores data permanently.
Explanation: It stores data permanently.
15. Primary memory capacity is:
Answer: c) Limited
Explanation: Primary memory has smaller capacity than secondary.
Explanation: Primary memory has smaller capacity than secondary.
16. Secondary memory speed is:
Answer: b) Slow
Explanation: It is slower but stores more data.
Explanation: It is slower but stores more data.
17. SSD is a:
Answer: b) Secondary memory
Explanation: SSD stores data permanently.
Explanation: SSD stores data permanently.
18. Data processing occurs in:
Answer: b) Primary memory
Explanation: CPU processes data stored in primary memory.
Explanation: CPU processes data stored in primary memory.
19. Which stores OS files permanently?
Answer: b) Hard Disk
Explanation: Operating system is stored in secondary storage.
Explanation: Operating system is stored in secondary storage.
20. Primary vs Secondary memory difference is mainly:
Answer: b) Speed & storage
Explanation: Primary memory is fast but small; secondary is slower but large.
Explanation: Primary memory is fast but small; secondary is slower but large.
