Q1. Memory is used for:

A) Processing data
B) Storing data and instructions
C) Amplifying signals
D) Reducing voltage

Answer: B) Storing data and instructions

Explanation:
Memory stores information, programs, and instructions for future use.

Q2. RAM stands for:

A) Random Access Memory
B) Read Access Memory
C) Rapid Access Memory
D) Real Access Memory

Answer: A) Random Access Memory

Explanation:
RAM allows data to be read or written in any order directly.

Q3. ROM stands for:

A) Read Only Memory
B) Random Output Memory
C) Read Output Module
D) Register Output Memory

Answer: A) Read Only Memory

Explanation:
ROM stores permanent data that is mainly read-only.

Q4. Which memory is volatile?

A) ROM
B) RAM
C) PROM
D) EPROM

Answer: B) RAM

Explanation:
RAM loses data when power is turned off.

Q5. Which memory is non-volatile?

A) RAM
B) SRAM
C) ROM
D) DRAM

Answer: C) ROM

Explanation:
ROM retains data even after power supply is removed.

Q6. SRAM stands for:

A) Static RAM
B) Serial RAM
C) Simple RAM
D) Stored RAM

Answer: A) Static RAM

Explanation:
SRAM stores data using flip-flops and does not require refreshing.

Q7. DRAM stands for:

A) Dynamic RAM
B) Digital RAM
C) Direct RAM
D) Double RAM

Answer: A) Dynamic RAM

Explanation:
DRAM stores data using capacitors and requires periodic refreshing.

Q8. Which RAM is faster?

A) DRAM
B) SRAM
C) ROM
D) PROM

Answer: B) SRAM

Explanation:
SRAM is faster but more expensive than DRAM.

Q9. Which RAM is cheaper?

A) SRAM
B) DRAM
C) ROM
D) Cache

Answer: B) DRAM

Explanation:
DRAM is less costly and used for main memory.

Q10. Refreshing is required in:

A) SRAM
B) DRAM
C) ROM
D) PROM

Answer: B) DRAM

Explanation:
DRAM needs refreshing because stored charge leaks over time.

Q11. PROM stands for:

A) Programmable Read Only Memory
B) Permanent ROM
C) Parallel ROM
D) Program RAM

Answer: A) Programmable Read Only Memory

Explanation:
PROM can be programmed once by the user.

Q12. EPROM stands for:

A) Erasable Programmable ROM
B) Electronic PROM
C) Easy PROM
D) Extended PROM

Answer: A) Erasable Programmable ROM

Explanation:
EPROM can be erased using ultraviolet light and reprogrammed.

Q13. EEPROM stands for:

A) Electrically Erasable Programmable ROM
B) Easy Erasable PROM
C) Electronic EPROM
D) Extra EEPROM

Answer: A) Electrically Erasable Programmable ROM

Explanation:
EEPROM can be erased electrically without removing the chip.

Q14. CAM stands for:

A) Common Access Memory
B) Content Addressable Memory
C) Computer Access Memory
D) Control Address Memory

Answer: B) Content Addressable Memory

Explanation:
CAM searches data by content rather than address.

Q15. CCD stands for:

A) Charge Coupled Device
B) Current Controlled Device
C) Computer Coupled Device
D) Code Control Device

Answer: A) Charge Coupled Device

Explanation:
CCD is used in imaging and special memory applications.

Q16. Main memory of computer is usually:

A) ROM
B) RAM
C) Cache only
D) Register only

Answer: B) RAM

Explanation:
RAM is the primary working memory of a computer.

Q17. Cache memory is generally made of:

A) DRAM
B) SRAM
C) ROM
D) PROM

Answer: B) SRAM

Explanation:
Cache requires high speed, so SRAM is preferred.

Q18. ROM is mainly used for:

A) Temporary storage
B) Permanent program storage
C) Arithmetic operations
D) Signal amplification

Answer: B) Permanent program storage

Explanation:
ROM stores BIOS, firmware, and fixed instructions.

Q19. Memory organization refers to:

A) Voltage arrangement
B) Arrangement of storage locations
C) Frequency control
D) Logic simplification

Answer: B) Arrangement of storage locations

Explanation:
It defines how memory cells are structured and accessed.

Q20. Expanding memory size means:

A) Increasing storage capacity
B) Reducing power
C) Increasing speed only
D) Changing logic family

Answer: A) Increasing storage capacity

Explanation:
Memory expansion increases total available storage.

Q21. Sequential memory means:

A) Data accessed in sequence
B) Random access
C) Parallel access
D) No access

Answer: A) Data accessed in sequence

Explanation:
Data is accessed one after another in order.

Q22. Hard disk is an example of:

A) Volatile memory
B) Secondary memory
C) Primary memory
D) Register memory

Answer: B) Secondary memory

Explanation:
Hard disk stores data permanently outside main memory.

Q23. Address lines in memory are used for:

A) Selecting memory location
B) Storing data
C) Power supply
D) Clock control

Answer: A) Selecting memory location

Explanation:
Address lines determine which memory location is accessed.

Q24. Data lines are used for:

A) Selecting address
B) Transferring data
C) Voltage control
D) Refreshing memory

Answer: B) Transferring data

Explanation:
Data lines carry actual binary information.

Q25. Number of locations in memory depends on:

A) Data lines
B) Address lines
C) Power lines
D) Clock lines

Answer: B) Address lines

Explanation:
If there are n address lines, locations = 2ⁿ.

Q26. 4 address lines can access:

A) 4 locations
B) 8 locations
C) 16 locations
D) 32 locations

Answer: C) 16 locations

Explanation:
2⁴ = 16 memory locations.

Q27. ROM as PLD means:

A) ROM used as Programmable Logic Device
B) RAM as logic
C) Counter as memory
D) Decoder as ROM

Answer: A) ROM used as Programmable Logic Device

Explanation:
ROM can implement combinational logic functions.

Q28. Which memory allows fastest CPU access?

A) Hard disk
B) Cache memory
C) CD
D) ROM

Answer: B) Cache memory

Explanation:
Cache is closest to CPU and provides very high speed.

Q29. Firmware is usually stored in:

A) RAM
B) ROM
C) DRAM
D) Register

Answer: B) ROM

Explanation:
Firmware contains permanent instructions stored in ROM.

Q30. Commonly used memory chip example is:

A) 7486
B) 8085
C) 6116 RAM
D) 7400

Answer: C) 6116 RAM

Explanation:
6116 is a common RAM memory chip used in digital systems.