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Welcome to the Stacks and Queues MCQs Page

Dive deep into the fascinating world of Stacks and Queues with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Stacks and Queues, a crucial aspect of Data Structures and Algorithms. In this section, you will encounter a diverse range of MCQs that cover various aspects of Stacks and Queues, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Data Structures and Algorithms.

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Check out the MCQs below to embark on an enriching journey through Stacks and Queues. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Data Structures and Algorithms.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Stacks and Queues. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Stacks and Queues MCQs | Page 17 of 25

Q161.
Convert the following infix expressions into its equivalent postfix expressions
(A + B ⋀D)/(E – F)+G
Discuss
Answer: (a).(A B D ⋀ + E F – / G +)
Q162.
Convert the following Infix expression to Postfix form using a stack
x + y * z + (p * q + r) * s, Follow usual precedence rule and assume that the expression is legal.
Discuss
Answer: (a).xyz*+pq*r+s*+
Discuss
Answer: (c).Stack is the FIFO data structure
Q164.
Consider the following operation performed on a stack of size 5.
Push(1);

Pop();

Push(2);

Push(3);

Pop();

Push(4);

Pop();

Pop();

Push(5);

After the completion of all operation, the number of elements present in stack are

a.

1

b.

2

c.

3

d.

4

Discuss
Answer: (a).1
Q165.
The type of expression in which operator succeeds its operands is?
Discuss
Answer: (c).Postfix Expression
Q166.
Assume that the operators +,-, X are left associative and ^ is right associative.
The order of precedence (from highest to lowest) is ^, X, +, -. The postfix expression for the infix expression a + b X c – d ^ e ^ f is
Discuss
Answer: (a).abc X+ def ^^ –
Q167.
If the elements “A”, “B”, “C” and “D” are placed in a stack and are deleted one at a time, what is the order of removal?
Discuss
Answer: (b).DCBA
Q168.
A linear list of elements in which deletion can be done from one end (front) and insertion can take place only at the other end (rear) is known as a ?
Discuss
Answer: (a).Queue
Q169.
The data structure required for Breadth First Traversal on a graph is?
Discuss
Answer: (c).Queue
Discuss
Answer: (a).FIFO (First In First Out) list

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