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Question

Which one of the following is not a characteristic of flash memory ?

This question was previously asked in
CDS 2 2026 Maths Question Paper (13-Sep-2026)
The correct answer is
It is an ultraviolet erasable programmable ROM.

Flash Memory Characteristics Analysis

The question asks to identify which option is not a characteristic of flash memory.

Let's analyze the provided options:

  • Option 1: It is an ultraviolet erasable programmable ROM. This describes Electrically Programmable Read-Only Memory (EPROM) that requires ultraviolet light for erasing. Flash memory is typically erased electrically, not using UV light.
  • Option 2: It is an electrically erasable programmable ROM. This is a key characteristic of flash memory, often falling under the category of EEPROM (Electrically Erasable Programmable Read-Only Memory).
  • Option 3: It retains data without power. This means the memory is non-volatile. Flash memory possesses this crucial feature.
  • Option 4: It is a non-volatile memory. This is synonymous with Option 3 and is a fundamental property of flash memory.
  • Option 5 is empty.

Identifying Non-Characteristic Feature

Based on the analysis:

  • Options 2, 3, and 4 describe true characteristics of flash memory: electrical erasability and non-volatility.
  • Option 1 describes EPROM, which uses UV light for erasing, a method not typically associated with standard flash memory.

Therefore, being an ultraviolet erasable programmable ROM is not a characteristic of flash memory.

Correct Answer: Option A contains the statement 'It is an ultraviolet erasable programmable ROM.'

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