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Programming MCQs

Master core and advanced concepts in Java, Python, C++, JavaScript, SQL, and more with curated MCQs and quizzes.

6 Core Topic Modules6 Practice Tests

Curriculum Scope & Examination Objectives

The Programming library on MCQGuru is structured to prepare learners for campus placement examinations, engineering semester tests, competitive entrance exams, and professional technical certifications. Questions are AI-assisted and automatically checked, and we correct errors that readers report.

Target Assessments

Campus Recruitment, GATE, SSC & Technical Interviews

Pedagogical Method

Answers with written explanations

Editorial Standards

Automated Checks & Error Reports

Programming Topics & Modules

6 Available Topics

Java MCQs

Multiple choice questions on core Java, object-oriented programming, inheritance, JVM, exceptions, and collections.

Subtopics:

Inheritance Exception Handling Collections Framework

Practice MCQs

Python MCQs

Comprehensive Python MCQs covering data structures, functions, decorators, generators, and OOP concepts.

Subtopics:

Data Types & Lists Functions & Lambdas

Practice MCQs

SQL MCQs

SQL multiple choice questions covering SELECT queries, joins, aggregations, subqueries, and indexing.

Subtopics:

Joins Queries & Subqueries

Practice MCQs

C++ MCQs

C++ OOP, pointers, STL, templates, memory management, and references.

Practice MCQs

JavaScript MCQs

JavaScript ES6+, closures, promises, event loop, DOM, and async/await.

Practice MCQs

HTML/CSS MCQs

HTML5 semantic tags, CSS flexbox, grid layout, responsive design, and animations.

Practice MCQs

Interactive Quizzes in Programming

Interactive Quiz

10 questions•~8 min

Core SQL Fundamentals Quiz

Test your understanding of SQL queries, table creation, constraints, and aggregations.

Start Practice Quiz

Interactive Quiz

10 questions•~8 min

JavaScript Essentials Quiz

Evaluate your knowledge of JavaScript types, scoping, closures, and promises.

Start Practice Quiz

Interactive Quiz

10 questions•~8 min

C++ Fundamentals Quiz

Assess your knowledge on C++ pointers, operators, memory management, and OOP.

Start Practice Quiz

Interactive Quiz

10 questions•~8 min

Python Essentials Quiz

Evaluate your knowledge of Python data types, mutability, lambda functions, and generators.

Start Practice Quiz

Interactive Quiz

10 questions•~8 min

Core Java Fundamentals Quiz

Assess your core Java skills: primitives, JVM memory architecture, execution lifecycle, and bytecode.

Start Practice Quiz

Interactive Quiz

10 questions•~8 min

Java Inheritance & OOP Quiz

Test your understanding of Java class extension, method overriding, super calls, and polymorphism.

Start Practice Quiz

Sample Questions

Featured Programming Practice Questions

Interactive Preview

What is the purpose of the 'final' keyword when applied to a variable in Java?

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View Answer & Explanation

Correct Answer: It prevents the variable from being reassigned after its initial value is set

Explanation:

Once a final variable is assigned a value, attempting to reassign it causes a compile-time error. This is commonly used for constants, though for object references it only prevents reassigning the reference, not changing the object's internal state.

What is method overloading in Java?

easy

View Answer & Explanation

Correct Answer: Defining multiple methods in the same class with the same name but different parameter lists

Explanation:

Overloading lets a class expose several versions of a method that differ in the number or type of parameters, and the compiler chooses which one to call based on the arguments provided at the call site.

What is the difference between a list and a tuple in Python?

easy

View Answer & Explanation

Correct Answer: A list is mutable and can be changed after creation, while a tuple is immutable

Explanation:

Because tuples cannot be changed after creation, they are often used for fixed collections of values, such as coordinates, and they can also be used as dictionary keys, which lists cannot because lists are unhashable.

What does the *args syntax allow a Python function to accept?

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View Answer & Explanation

Correct Answer: A variable number of positional arguments, collected into a tuple

Explanation:

When a function is defined with *args, any extra positional arguments passed to it are gathered into a tuple inside the function, letting the function accept a flexible number of inputs.

What is the difference between DELETE and TRUNCATE in SQL?

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View Answer & Explanation

Correct Answer: DELETE removes rows one at a time and can be rolled back, while TRUNCATE removes all rows at once and is generally faster

Explanation:

DELETE is a logged, row by row operation that supports a WHERE clause and can be undone within a transaction, while TRUNCATE deallocates the data pages directly and typically cannot target specific rows.

What does the UNION operator do in SQL?

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View Answer & Explanation

Correct Answer: Combines the results of two or more SELECT queries and removes duplicate rows

Explanation:

UNION requires each SELECT statement to return the same number of columns with compatible data types, and it automatically removes duplicate rows from the combined result unless UNION ALL is used instead.

Explore Other Categories

Computer Science

Prepare for technical interviews and exams in DBMS, Operating Systems, Computer Networks, and Computer Architecture.

4 topics · 4 quizzes

Mathematics

Practice fundamental math questions, algebra, discrete mathematics, calculus, and probability.

2 topics · 4 quizzes

Aptitude

Quantitative aptitude, logical reasoning, and problem solving questions for competitive exams and campus placements.

1 topic · 4 quizzes

English

Sharpen your verbal ability, English grammar, tenses, vocabulary, synonyms, and antonyms.

1 topic · 4 quizzes