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