Free Mock Test - Data Structures and Algorithms : Stack (Test 1)

In an effort to support computer science students, coding enthusiasts, and job seekers preparing for technical interviews, a comprehensive Free Online Data Structure Mock Test has been launched. The test is designed to help learners evaluate their understanding of fundamental and advanced data structure concepts through a structured and interactive assessment.
Data Structures form the backbone of computer science and software development. Topics such as Arrays, Linked Lists, Stacks, Queues, Trees, Graphs, Hashing, and Algorithms are frequently asked in academic examinations, coding competitions, and technical interviews conducted by leading technology companies.
The newly introduced mock test platform offers a wide range of multiple-choice questions (MCQs) covering beginner, intermediate, and advanced-level topics. Participants can assess their strengths and identify areas requiring further improvement through instant results and detailed explanations.

Total Questions : 30

Timer : sec

Question : What is a Stack?


Question : Which operation inserts an element into a stack?


Question : Which operation removes the top element from a stack?


Question : Which element can be accessed directly in a stack?


Question : What is the time complexity of Push operation?


Question : What is the time complexity of Pop operation?


Question : Which condition occurs when attempting to pop from an empty stack?


Question : Which condition occurs when pushing into a full array stack?


Question : In an array implementation of stack, the top pointer initially is usually:


Question : Which notation uses stacks for evaluation?


Question : If stack contains [10, 20, 30] (30 at top), after one pop?


Question : What will be the top element after pushing 5, 10, 15?


Question : Which function returns the top element without removing it?


Question : In linked list implementation of stack, insertion occurs at:


Question : What is the space complexity of a stack containing n elements?


Question : Which data structure is used in function call management?


Question : What is the output?

Push(1)
Push(2)
Pop()
Push(3)
Top element = ?


Question : Which application uses stack?


Question : Linked list stack avoids:


Question : In array stack of size 5, if top = 4:


Question : What is the postfix expression of A + B * C?


Question : Evaluate postfix:

5 2 + 3 *


Question : Which stack application checks balanced parentheses?


Question : For array stack:

Push(10)
Push(20)
Push(30)
Pop()
Push(40)
Top element?


Question : In linked-list stack, push operation complexity is:


Question : What is the output?

Push(1)
Push(2)
Push(3)
Pop()
Pop()
Remaining top?


Question : Which traversal of a binary tree can be implemented using a stack?


Question : Maximum number of elements in an array stack of size n is:


Question : Consider stack operations:

Push(5)
Push(10)
Push(15)
Pop()
Push(20)
Pop()
Current top?


Question : What is the postfix form of:
(A+B)*(C-D)


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