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