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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 6 of 25

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Q51.
What is the result of the following operation:
Top (Push (S, X))

a.

X

b.

null

c.

S

d.

None of these

Discuss
Answer: (a).X
Q52.
The prefix form of an infix expression p + q − r t* is

a.

+ pq − rt

b.

− +pqr t*

c.

− +pq*rt

d.

- +*pqrt

Discuss
Answer: (c).− +pq*rt
Q53.
Which data structure is used for implementing recursion?

a.

Queue

b.

Stack

c.

Arrays

d.

List

Discuss
Answer: (b).Stack
Q54.
The equivalent prefix expression for the following infix expression (A+B)-(C+D*E)/F*G is

a.

-+AB*/+C*DEFG

b.

/-+AB*+C*DEFG

c.

-/+AB*+CDE*FG

d.

-+AB*/+CDE*FG

Discuss
Answer: (a).-+AB*/+C*DEFG
Q55.
The result of evaluating the postfix expression 5, 4, 6, +, *, 4, 9, 3, /, +, * is

a.

600

b.

350

c.

650

d.

588

Discuss
Answer: (b).350
Q56.
In Reverse Polish notation, expression A*B+C*D is written as

a.

AB*CD*+

b.

A*BCD*+

c.

AB*CD+*

d.

A*B*CD+

Discuss
Answer: (a).AB*CD*+
Q57.
__________is a linear data structure in which an element can be added or removed only at one end.

a.

Stack

b.

Queue

c.

String

d.

Linked List

Discuss
Answer: (a).Stack
Q58.
In stack terminology, the __________operations are known as push and pop operations respectively.

a.

Delete

b.

Insert

c.

Both (a) and (b)

d.

None of the above

Discuss
Answer: (b).Insert
Q59.
A stack works on the principle of____________.

a.

LIFO

b.

LAFO

c.

LIFF

d.

None of the above

Discuss
Answer: (a).LIFO
Q60.
A common example of a queue is people waiting in line at a__________.

a.

Bus stop

b.

Movie hall

c.

Shopping mall

d.

None of the above

Discuss
Answer: (a).Bus stop
Page 6 of 25

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