Stack operations (push, pop, peek) MCQs

By: Prof. Dr. Fazal Rehman | Last updated: May 14, 2025

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1. : What is a stack in data structures?





2. : Which operation adds an element to the top of the stack?





3. : What happens when you pop an element from an empty stack?





4. : What is the time complexity of the push operation in a stack implemented using an array with sufficient capacity?





5. : Which operation removes and returns the top element of the stack?





6. : What is the time complexity of the pop operation in a stack implemented using a linked list?





7. : Which operation returns the top element of the stack without removing it? (A) Push





8. : What happens when you peek an element from an empty stack?





9. : What is the time complexity of the peek operation in a stack?





10. : Which of the following statements is true about stack operations?





11. : Which data structure is commonly used to implement a stack?





12. : In a stack, which operation modifies the size of the stack?





13. : What happens if you try to push an element onto a full stack (using an array implementation)? (A) The element is added at the top





14. : Which operation is used to check if a stack is empty?





15. : What is the space complexity of a stack operation?





16. : Which of the following statements is true about the stack data structure? (A) It allows elements to be accessed randomly





17. : What is the primary limitation of using an array to implement a stack? (A) Limited capacity





18. : Which stack operation is responsible for decreasing the size of the stack? (A) Push





19. : Which stack operation can be used to reverse the order of elements?





20. : In stack operations, what does the term “top” refer to?





   

Data Structures MCQs

Basic Concepts
  1. Introduction to Data Structures
  2. Complexity Analysis MCQs
Linear Data Structures MCQs
  1. Arrays MCQs
  2. Linked Lists MCQs
  3. Stacks MCQs
  4. Queues MCQs
Non-Linear Data Structures MCQs
  1. Trees MCQs
  2. Heaps MCQs
  3. Graphs MCQs
Hashing MCQs MCQs
  1. Hash Tables
Sorting and Searching Algorithms MCQs 
  1. Sorting Algorithms MCQs
  2. Searching Algorithms MCQs
Miscellaneous
  1. Memory Management in data structures MCQs
  2. String Manipulation Algorithms MCQs
  1. Data Structures MCQs 1
  2. Data Structures MCQs 2
  3. Data Structures MCQs 3
  4. Data Structures MCQs 4
  5. Data Structures MCQs 5
  6. Stacks Solved MCQs
  7. Queues MCQs
  8. pointer mcqs
  9. Array MCQs
 

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