30 MCQs on Flutter and Dart App Development

Q1. Which widget is used to create a drawer in Flutter?

Drawer

Scaffold

All of the above

AppBar

Q2. Which widget is used to build forms in Flutter?

TextFormField

ListView

Container

Scaffold

Q3. What is a Future in Dart?

An object representing a value or error that will be available in the future

A widget used to display a loading animation

A function that takes no arguments and returns void

A data structure used to store multiple values of the same type

Q4. Which programming language is used for developing Flutter apps?

JavaScript

Dart

Swift

Python

Q5. Which widget is used to create a dialog box in Flutter?

SimpleDialog

CupertinoAlertDialog

All of the above

AlertDialog

Q6. Which package is used for HTTP requests in Dart?

dart:io

request

dart:html

http

Q7. What is a mixin in Dart?

A way to combine two or more objects into a single object

A way to define a new interface

A way to define a new class based on an existing class

A way to reuse code in multiple classes without using inheritance

Q8. Which operator is used to check for equality in Dart?

=

!=

>

==

Q9. Which package is used for state management in Flutter?

All of the above

bloc

mobx

redux

Q10. What is the purpose of the didChangeDependencies() method in a StatefulWidget in Flutter?

To initialize the state of the widget

To update the state of the widget when its dependencies change

To dispose of the widget

To build the user interface

Q11. Which package is used for animations in Flutter?

flutter/animation.dart

flutter/transition.dart

flutter/hero.dart

flutter/animation_controller.dart

Q12. Which of the following is NOT a stateful widget in Flutter?

Checkbox

TextField

DropdownButton

ListView

Q13. Which tool is used to build layouts in Flutter?

Visual Studio Code

Flutter Widget Inspector

Xcode

Android Studio

Q14. What is the difference between StatelessWidget and StatefulWidget in Flutter?

StatelessWidget cannot be updated once it is built, while StatefulWidget can be updated multiple times.

StatelessWidget can only be used for simple UI components, while StatefulWidget can be used for complex UI components.

StatelessWidget is used for building user interfaces, while StatefulWidget is used for data management.

StatelessWidget is used for state management, while StatefulWidget is used for UI rendering.

Q15. What is a widget in Flutter?

An object that holds data

A function that returns a value

A programming construct that executes a set of instructions

A visual element that represents a part of the user interface

Q16. Which of the following is NOT a data type in Dart?

bool

int

char

String

Q17. Which operator is used for conditional expressions in Dart?

?

:

|

&

Q18. Which package is used for routing in Flutter?

flutter_navigation

flutter_route

flutter_router

flutter/material.dart

Q19. Which keyword is used to define a class in Dart?

type

object

class

struct

Q20. Which widget is used to create a tab bar in Flutter?

Tab

All of the above

TabBarView

TabBar

Q21. What is the purpose of the main() function in Dart?

To handle user input

To define the starting point of the application

To declare variables and functions

To display the output of the application

Q22. Which package is used for internationalization and localization in Flutter?

localization

i18n

l10n

intl

Q23. Which of the following is NOT a benefit of using Flutter for app development?

Cross-platform compatibility

Faster development cycles

Reduced app size

Limited third-party plugin support

Q24. Which widget is used to display an image in Flutter?

Container

Text

Image

Icon

Q25. What is the purpose of hot reload in Flutter?

To test the app's performance

To generate a release build of the app

To compile and run the app on a physical device

To update the app's code without losing the current state

Q26. Which of the following is NOT a type of layout in Flutter?

Stack

Column

Row

Grid

Q27. Which widget is used to implement scrolling in Flutter?

ListView

Scrollable

All of the above

SingleChildScrollView

Q28. Which widget is used to create a button in Flutter?

FlatButton

IconButton

RaisedButton

All of the above

Q29. Which operator is used to access the properties of an object in Dart?

.

::

->

:

Q30. What is the purpose of the initState() method in a StatefulWidget in Flutter?

To initialize the state of the widget

To handle user input

To dispose of the widget

To build the user interface

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