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