- 1. What keyword in Dart is used to handle errors during input?
A) try-catch
B) error
C) try
D) catch
- 2. What is the minimum recommended API level for Android projects?
A) API 19
B) API 14
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) run()
B) onCreate()
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) false
B) true
C) Null
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) GridLayout
B) Button
C) TextView
D) EditText
- 9. Which Kotlin function handles button clicks in the calculator?
A) setOnClickListener
B) setOnTapListener
C) addClickListener
D) listenClick
- 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) write()
B) output()
C) echo()
D) print()
- 12. What file defines the app's structure and permissions in Android projects?
A) AndroidManifest.com
B) AndroidManifest.www
C) AndroidManifest.file
D) AndroidManifest.org
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:io
C) dart:ui
D) dart:core
- 15. What is the official IDE for Android development?
A) MOBILE STUDIO
B) ANDROID STUDIO
C) STUDIO ANDROID
D) STUDIO MOBILE
- 16. What Kotlin variable type changes based on reassignment?
A) var
B) val
C) final
D) const
- 17. What Android file includes the line
setContentView(R.layout.activity_main)?
A) layout.xml
B) MainActivity.kt
C) build.gradle
D) AndroidManifest.xml
- 18. In Dart, how do you calculate the area of a circle using radius?
A) π * r
B) radius radius 3.14
C) sqrt(radius) 3.14
D) 3.14* radius
- 19. Which of the following is NOT a Dart data type?
A) bool
B) string
C) int
D) float
- 20. Which widget is used in Android XML to display text output?
A) EditText
B) Button
C) TextView
D) Label
- 21. What symbol is used for multiplication in Kotlin code?
A) mult()
B) x
C) times
D) *
- 22. What is the purpose of the AVD Manager?
A) Manage virtual devices
B) View application logs
C) Debug user input
D) Monitor app usage
- 23. What Dart loop is best for a known number of iterations?
A) if
B) do-while
C) for
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) for
B) loop
C) switch
D) if-else
- 27. What is the result of 10/2 in Dart if both are integers?
A) 5.0
B) Error
C) 5
D) 10
- 28. What data type is used to store true/false values in Dart?
A) double
B) bool
C) binary
D) int
- 29. Which Dart function can be void (no return value)?
A) print()
B) calculateArea()
C) displayOutput()
D) All of these
- 30. What layout is used for button placement in the sample calculator app?
A) LinearLayout
B) ConstraintLayout
C) GridLayout
D) RelativeLayout
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