25 Flutter MCQ Questions and Answers

The Flutter platform has been steadily growing in popularity since its initial alpha release in May 2017. Its adoption has enabled developers to build powerful cross-platform applications and assemble exceptional teams. This guide to multiple-choice Flutter questions is designed to help you build and demonstrate the knowledge needed to join these teams.

We've compiled 25 of the most commonly asked, insightful, and revealing Flutter MCQ questions with answers. These will help you showcase your skills, facilitate discussions on development topics, and ensure you have a thorough understanding of Flutter as you pursue a developer role.

Our comprehensive Flutter development resources can be invaluable as you prepare for your next Flutter position. For example, our ultimate guide to Flutter frameworks is particularly useful before a challenging interview. After reviewing our resources, take our multiple-choice quiz to test your knowledge of Flutter and Dart, and get ready for the questions you might face in a Flutter developer interview.

Flutter MCQ Questions

What is Flutter?

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. Flutter is an open-source UI toolkit for creating exceptional front-end cross-platform applications.

Who developed the Flutter Framework and continues to maintain it today?

A. Facebook

B. Microsoft

C. Google

D. Oracle

Answer: C. Google began developing Flutter back in 2015 and supports its continued development and maintenance today alongside a highly active open-source community.

Which programming language is used to build Flutter applications?

A. Kotlin

B. Dart

C. Java

D. Go

Answer: B. Flutter programs are written in Google's own Dart programming language.

How many types of widgets are there in Flutter?

A. 2

B. 4

C. 6

D. 8+

Answer: A. There are two types of widgets available to developers in Flutter. These are stateful and stateless widgets.

When building for iOS, Flutter is restricted to an __ compilation strategy

A. AOT (ahead-of-time)

B. JIT (Just-in-time)

C. Transcompilation

D. Recompilation

Answer: A. Due to iOS restrictions on dynamic code execution Flutter apps must use AOT compilation on the iOS platform.

A sequence of asynchronous Flutter events is known as a:

A. Flow

B. Current

C. Stream

D. Series

Answer: C. A sequence of asynchronous events is often referred to as a stream.

Access to a cloud database through Flutter is available through which service?

A. SQLite

B. Firebase Database

C. NOSQL

D. MYSQL

Answer: B. Firebase database allows for access to a cloud-based database provider for Flutter applications.

What are some key advantages of Flutter over alternate frameworks?

A. Rapid cross-platform application development and debugging tools

B. Future-proofed technologies and UI resources

C. Strong supporting tools for application development and launch

D. All of the above

Answer: D. Flutter boasts all of these features for developers as improvements over competing frameworks or native application development. Our guide to [the pros and cons of Flutter development]() covers each of these in detail.

What element is used as an identifier for components when programming in Flutter?

A. Widgets

B. Keys

C. Elements

D. Serial

Answer: B. Keys are used in Flutter to uniquely identify widgets, elements, and SemanticsNodes.

What type of test can examine your code as a complete system?

A. Unit tests

B. Widget tests

C. Integration Tests

D. All of the above

Answer: C. Integration tests will test Flutter code as one cohesive package and examine how elements interact with each other.

What type of Flutter animation allows you to represent real-world behavior?

A. Physics-based

B. Maths-based

C. Graph-based

D. Sim-based

Answer: A. Physics-based animation allows you to simulate real-world behaviors in Flutter applications

True or false: Flutter boasts improved runtime performance over most application frameworks.

A. True

B. False

Answer: A. Flutter indeed boasts exceptional performance credentials when compared to related application frameworks. Our comparison between Flutter and React Native takes a deep dive into the topic and highlights where the strengths and weaknesses of each technology lie.

What command would you use to compile your Flutter app in release mode?

A. Flutter --release

B. Flutter build --release

C. Flutter run --release

D. Flutter run $release

Answer: C. Flutter run --release will compile your application for release.

Which function will return the widgets attached to the screen as a root of the widget tree to be rendered on screen?

A. main()

B. runApp()

C. container()

D. root()

Answer: B runApp() will return the widgets attached to the screen as the root of the widget tree.

What is the key configuration file used when building a Flutter project?

A. pubspec.yaml

B. pubspec.xml

C. config.html

D. root.xml

Answer: A. pubspec.yaml lives at the base of a Flutter project and provides the necessary configuration and setup to build Flutter apps.

True or false: an experienced Flutter developer doesn't need to know platform native languages or tools to build apps.

A. True

B. False

Answer: B. False, a proficient Flutter developer would be expected to dive down into platform code from time to time and debug errors or performance issues that are affecting the application. When hiring a Flutter developer, this is a key skill to look out for and something you should include in your Flutter hiring process.

Which component allows us to specify the distance between widgets on the screen?

A. SafeArea

B. SizedBox

C. table

D. AppBar

Answer: B. SizedBox is a widget that allows us to have a specified height or width between two related widgets.

Which widget type allows you to modify its appearance dynamically according to user input?

A. Stateful widget

B. Stateless widget

Answer: A. Stateful widgets allow you to modify their data in response to user input or retrieving data.

What command would you run to verify your Flutter install and ensure your environment is set up correctly?

A. Flutter run

B. Flutter build

C. Flutter doctor

D. Flutter help

Answer: C. Flutter doctor can check if your Flutter environment is set up correctly for building Flutter applications.

Which release mode will not contain any debugging data when run?

A. Profile

B. Debug

C. Release

D. Test

Answer: C. Release mode apps are built optimized for performance and do not include debugging messages for developers.

What language is Flutter's rendering engine primarily written in?

A. Kotlin

B. C++

C. Dart

D. Java

Answer: B. Flutter's rendering engine is primarily written in C++ to provide low-level rendering using the Skia graphics library.

What is a drawback of Flutter that might lead you to choose another solution?

A. Non-native looking application UI

B. Large application footprint

C. A relatively unproven framework and language

D. All of the above

Answer: D. These are three of Flutter's primary drawbacks and reasons that developers may wish to look at another solution for some types of apps.

True or False: Flutter supports desktop application development.

A. True

B. False

Answer: A. It's true, as of Flutter 3.0 support for desktop and web application development has been moved into a stable release.

What widget would you use for repeating content in Flutter?

A. ExpandedView

B. ListView

C. Stack

D. ArrayView

Answer: B. The ListView is used for repeating content in the Flutter UI

True or False: Flutter teams are inherently more difficult to manage because the framework is so new.

A. True

B. False

Answer: B. It's false. Flutter's booming popularity is evidence enough that Flutter teams are not more difficult to manage or maintain than any other technology or tool. Our guide to managing outsourced Flutter development teams has some best practices and guides on how to do exactly that.

Multiple Choice Questions on Flutter Development

Whether you're preparing for a job interview, study session, or just brushing up on your knowledge of Flutter — getting each of these questions correct is a strong indicator that you know your stuff when it comes to Google's flagship framework.

Our teams of Flutter development companies are made up of Flutter experts that similarly know the ins and outs of the language and how to use it well. If you plan to join them as a Fully-fledged Flutter expert then brush up on our resources and guides and take full advantage of each of these articles to get to know the platform and each of its unique features.