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