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