If you’re preparing for a Flutter interview or exam, these top multiple-choice questions (MCQs) will help you test your knowledge. We’ve curated the most common and important Flutter MCQs based on popular sources, complete with options, correct answers, and explanations. These cover basics like widgets, state management, and development tools to advanced topics.
1. What is Flutter?
Question: What is Flutter?
Options:
A. Flutter is an open-source backend development framework
B. Flutter is an open-source UI toolkit
C. Flutter is an open-source programming language for cross-platform applications
D. Flutters is a DBMS toolkit
Answer: B
Explanation: Flutter is an open-source UI toolkit for creating exceptional front-end cross-platform applications. 11
2. Who developed the Flutter Framework and continues to maintain it today?
Question: Who developed the Flutter Framework and continues to maintain it today?
Options:
A. Facebook
B. Microsoft
C. Google
D. Oracle
Answer: C
Explanation: Google began developing Flutter back in 2015 and supports its continued development and maintenance today alongside a highly active open-source community. 11
3. Which programming language is used to build Flutter applications?
Question: Which programming language is used to build Flutter applications?
Options:
A. Kotlin
B. Dart
C. Java
D. Go
Answer: B
Explanation: Flutter programs are written in Google’s own Dart programming language. 11
4. How many types of widgets are there in Flutter?
Question: How many types of widgets are there in Flutter?
Options:
A. 2
B. 4
C. 6
D. 8+
Answer: A
Explanation: There are two types of widgets available to developers in Flutter. These are stateful and stateless widgets. 11
5. What is the primary advantage of using Flutter in mobile app development?
Question: What is the primary advantage of using Flutter in mobile app development?
Options:
A. To enable server-side rendering of applications
B. To provide a back-end framework for mobile apps
C. To facilitate the rapid development of cross-platform mobile applications with a single codebase
D. To enhance the security features of mobile applications
Answer: C
Explanation: Flutter allows developers to build apps for multiple platforms using one codebase, speeding up development. 10
6. What is a common use of Flutter’s hot reload feature?
Question: What is a common use of Flutter’s hot reload feature?
Options:
A. To optimize app performance
B. To reduce the app size
C. To quickly view changes in the UI without restarting the app
D. To secure the app from vulnerabilities
Answer: C
Explanation: Hot reload enables fast iteration by updating the UI instantly without a full restart. 10
7. Which command is used to create a new Flutter project?
Question: Which command is used to create a new Flutter project?
Options:
A. flutter run
B. flutter create
C. flutter build
D. flutter start
Answer: B
Explanation: The flutter create command initializes a new Flutter project. 10
8. What is the purpose of the Scaffold widget?
Question: What is the purpose of the Scaffold widget?
Options:
A. Create database scaffolding
B. Implement basic material design visual layout structure
C. Generate network connections
D. Manage application state
Answer: B
Explanation: Scaffold provides a default app bar, body, and other structural elements for Material Design apps. 12
9. What does setState() do in Flutter?
Question: What does setState() do in Flutter?
Options:
A. Reset the application
B. Create a new state
C. Trigger a rebuild of the widget
D. Stop the application
Answer: C
Explanation: setState() notifies the framework that the internal state of the widget has changed, causing a rebuild. 12
10. What is the purpose of the pubspec.yaml file?
Question: What is the purpose of the pubspec.yaml file?
Options:
A. Define UI layout
B. Configure database connections
C. Manage project dependencies and metadata
D. Create network configurations
Answer: C
Explanation: pubspec.yaml is used to declare dependencies, assets, and other project configurations. 12
These questions are among the most frequently asked in Flutter interviews and certifications. For more in-depth preparation, explore additional resources or practice coding with Flutter projects.