Stacks MCQs

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

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1. : What is a stack?



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



3. : What operation removes the top element from a stack?



4. : What is the time complexity for the push operation in a stack?



5. : What is the time complexity for the pop operation in a stack?



6. : What is the main disadvantage of using an array to implement a stack?



7. : Which of the following is true about a stack?



8. : What is the result of popping from an empty stack?



9. : What is the main application of stacks in programming?



10. : Which of the following operations is NOT supported by a stack?



11. : What does the peek operation do in a stack?



12. : How is a stack typically represented in memory?



13. : What happens to the stack pointer when an element is pushed onto the stack?



14. : What is the maximum size of a stack implemented using an array?



15. : What is the primary use of the stack data structure in recursion?



16. : What will happen if you try to push an element onto a full stack?



17. : Which of the following scenarios can be solved using a stack?



18. : In which data structure do you use a stack to evaluate expressions?



19. : Which of the following can cause a stack overflow?



20. : What is the space complexity of a stack implemented with a linked list?



21. : Which of the following best describes a stack underflow?



22. : How do you implement a stack using two queues?



23. : Which of the following is an application of a stack?



24. : What is the output of the following code if the stack is empty? stack.pop();



25. : What is the purpose of using a stack for parsing expressions?



26. : How does a stack implemented with a linked list grow?



27. : What is a common way to implement a stack using an array?



28. : Which of the following statements is true about a stack?



29. : In a stack, what does it mean to “pop” an element?



30. : Which data structure can be used to implement recursion?



31. : What is the effect of using delete on a stack node in C++?



32. : What is the primary characteristic of a stack’s push and pop operations?



33. : What is the main function of the “top” operation in a stack?



34. : What is the relationship between stack and recursion?



35. : Which of the following describes the stack’s memory allocation?



 

 

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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