- 1. What keyword in Dart is used to handle errors during input?
A) try
B) error
C) try-catch
D) catch
- 2. What is the minimum recommended API level for Android projects?
A) API 19
B) API 14
C) API 25
D) API 21
- 3. In Dart, which keyword is used to define a function that returns a value?
A) return
B) function
C) def
D) <type> (like int, double)
- 4. Which method is used to start an Android app?
A) run()
B) onStart()
C) onCreate()
D) startApp()
- 5. What Dart operator is used to check equality?
A) !=
B) =
C) ;=
D) ==
- 6. What is the result of this Dart statement: bool isTrue = 5 > 3 && 2 < 1;
A) false
B) Null
C) true
D) Error
- 7. What is the result of this Dart statement: bool isTrue = 5 > 3 && 2 < 1;
A) True
B) Null
C) False
D) Error
- 8. What component allows users to enter text in Android apps?
A) TextView
B) EditText
C) Button
D) GridLayout
- 9. Which Kotlin function handles button clicks in the calculator?
A) addClickListener
B) setOnClickListener
C) listenClick
D) setOnTapListener
- 10. What folder in Android Studio stores layout XML files?
A) Values
B) Manifest
C) src
D) res
- 11. What function is used in Dart to print output?
A) write()
B) print()
C) echo()
D) output()
- 12. What file defines the app's structure and permissions in Android projects?
A) AndroidManifest.file
B) AndroidManifest.xml
C) AndroidManifest.www
D) AndroidManifest.org
E) AndroidManifest.com
- 13. How is a comment written in Dart?
A) comment
B) <!-- comment -->
C) // comment
D) # comment
- 14. Which import is necessary for reading user input in Dart?
A) dart:core
B) dart:io
C) dart:math
D) dart:ui
- 15. What is the official IDE for Android development?
A) STUDIO MOBILE
B) STUDIO ANDROID
C) MOBILE STUDIO
D) ANDROID STUDIO
- 16. What Kotlin variable type changes based on reassignment?
A) val
B) var
C) final
D) const
- 17. What Android file includes the line
setContentView(R.layout.activity_main)?
A) layout.xml
B) build.gradle
C) AndroidManifest.xml
D) MainActivity.kt
- 18. In Dart, how do you calculate the area of a circle using radius?
A) π * r
B) sqrt(radius) 3.14
C) radius radius 3.14
D) 3.14* radius
- 19. Which of the following is NOT a Dart data type?
A) bool
B) float
C) int
D) string
- 20. Which widget is used in Android XML to display text output?
A) EditText
B) Button
C) TextView
D) Label
- 21. What symbol is used for multiplication in Kotlin code?
A) times
B) x
C) *
D) mult()
- 22. What is the purpose of the AVD Manager?
A) View application logs
B) Manage virtual devices
C) Monitor app usage
D) Debug user input
- 23. What Dart loop is best for a known number of iterations?
A) if
B) for
C) while
D) do-while
- 24. What tool simulates a real Android device?
A) ANDROID SIMULATOR
B) ANDROID PHONE
C) ANDROID STIMULI
D) ANDROID EMULATOR
- 25. What is the default displayed text in the calculator app's TextView?
A) output
B) null
C) 0
D) results
- 26. Which control structure handles "even or odd" checking in Dart?
A) for
B) loop
C) if-else
D) switch
- 27. What is the result of 10/2 in Dart if both are integers?
A) 10
B) Error
C) 5
D) 5.0
- 28. What data type is used to store true/false values in Dart?
A) double
B) bool
C) binary
D) int
- 29. Which Dart function can be void (no return value)?
A) displayOutput()
B) All of these
C) print()
D) calculateArea()
- 30. What layout is used for button placement in the sample calculator app?
A) GridLayout
B) ConstraintLayout
C) LinearLayout
D) RelativeLayout
|