- 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 14
C) API 25
D) API 21
- 3. In Dart, which keyword is used to define a function that returns a value?
A) function
B) def
C) <type> (like int, double)
D) return
- 4. Which method is used to start an Android app?
A) startApp()
B) run()
C) onStart()
D) onCreate()
- 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) Null
D) Error
- 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) Button
D) EditText
- 9. Which Kotlin function handles button clicks in the calculator?
A) setOnClickListener
B) addClickListener
C) listenClick
D) setOnTapListener
- 10. What folder in Android Studio stores layout XML files?
A) src
B) Values
C) res
D) Manifest
- 11. What function is used in Dart to print output?
A) print()
B) echo()
C) output()
D) write()
- 12. What file defines the app's structure and permissions in Android projects?
A) AndroidManifest.file
B) AndroidManifest.com
C) AndroidManifest.org
D) AndroidManifest.xml
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:io
B) dart:core
C) dart:math
D) dart:ui
- 15. What is the official IDE for Android development?
A) ANDROID STUDIO
B) STUDIO MOBILE
C) MOBILE STUDIO
D) STUDIO ANDROID
- 16. What Kotlin variable type changes based on reassignment?
A) const
B) final
C) var
D) val
- 17. What Android file includes the line
setContentView(R.layout.activity_main)?
A) MainActivity.kt
B) AndroidManifest.xml
C) layout.xml
D) build.gradle
- 18. In Dart, how do you calculate the area of a circle using radius?
A) sqrt(radius) 3.14
B) 3.14* radius
C) π * r
D) radius radius 3.14
- 19. Which of the following is NOT a Dart data type?
A) int
B) bool
C) string
D) float
- 20. Which widget is used in Android XML to display text output?
A) Label
B) Button
C) EditText
D) TextView
- 21. What symbol is used for multiplication in Kotlin code?
A) times
B) mult()
C) x
D) *
- 22. What is the purpose of the AVD Manager?
A) Debug user input
B) Manage virtual devices
C) Monitor app usage
D) View application logs
- 23. What Dart loop is best for a known number of iterations?
A) do-while
B) for
C) if
D) while
- 24. What tool simulates a real Android device?
A) ANDROID EMULATOR
B) ANDROID STIMULI
C) ANDROID PHONE
D) ANDROID SIMULATOR
- 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) switch
B) if-else
C) for
D) loop
- 27. What is the result of 10/2 in Dart if both are integers?
A) 10
B) 5
C) 5.0
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) calculateArea()
B) All of these
C) print()
D) displayOutput()
- 30. What layout is used for button placement in the sample calculator app?
A) ConstraintLayout
B) GridLayout
C) LinearLayout
D) RelativeLayout
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