Flutter Quiz 1

What is the main purpose of main() in a Flutter app?

• To define the app's theme

• To start the execution of the app

• To build the widget tree

• To handle navigation

Identify the correct Dart syntax to declare a constant:

• final String name = 'John';

• const name = 'John';

• var name = const 'John';

• final name = 'John';

What does hot reload do in Flutter?

• Restarts the app entirely

• Rebuilds the widget tree without losing the app state

• Compiles the app into native code

• Reloads the Dart SDK

Write Dart code to define a function that returns the square of a number.

Which widget wraps another widget and allows it to scroll?

• Container

• ListView

• Scaffold

• TextField

void main() { runApp(MyApp()); }

class MyApp extends StatelessWidget

{

@override

Widget build(BuildContext context)

{

return MaterialApp( home: ________, );

}

}

What is runApp() used for?

• To initialize the Flutter framework

• To attach the widget tree to the screen

• To build the root widget

• All of the above

void main() { runApp(MaterialApp(home: Scaffold(appBar: AppBar(title: Text(Hello, World))))); }

Find the error and just write the correct syntax of that widget.
Do not explain or write anything else.

What type does the main() function in Dart return?

• int

• String

• void

• Future

Which of the following is not a widget?

• Conatiner

• Padding

• Theme

• main()