- 1. What keyword in Dart is used to handle errors during input?
A) catch
B) error
C) try-catch
D) try
- 2. What is the minimum recommended API level for Android projects?
A) API 14
B) API 19
C) API 21
D) API 25
- 3. In Dart, which keyword is used to define a function that returns a value?
A) def
B) return
C) <type> (like int, double)
D) function
- 4. Which method is used to start an Android app?
A) run()
B) onCreate()
C) startApp()
D) onStart()
- 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) Null
B) false
C) true
D) Error
- 7. What is the result of this Dart statement: bool isTrue = 5 > 3 && 2 < 1;
A) Null
B) Error
C) False
D) True
- 8. What component allows users to enter text in Android apps?
A) Button
B) TextView
C) EditText
D) GridLayout
- 9. Which Kotlin function handles button clicks in the calculator?
A) listenClick
B) addClickListener
C) setOnClickListener
D) setOnTapListener
- 10. What folder in Android Studio stores layout XML files?
A) Values
B) Manifest
C) res
D) src
- 11. What function is used in Dart to print output?
A) print()
B) write()
C) output()
D) echo()
- 12. What file defines the app's structure and permissions in Android projects?
A) AndroidManifest.xml
B) AndroidManifest.org
C) AndroidManifest.file
D) AndroidManifest.www
E) AndroidManifest.com
- 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:ui
C) dart:core
D) dart:io
- 15. What is the official IDE for Android development?
A) MOBILE STUDIO
B) STUDIO MOBILE
C) STUDIO ANDROID
D) ANDROID STUDIO
- 16. What Kotlin variable type changes based on reassignment?
A) val
B) final
C) var
D) const
- 17. What Android file includes the line
setContentView(R.layout.activity_main)?
A) layout.xml
B) build.gradle
C) MainActivity.kt
D) AndroidManifest.xml
- 18. In Dart, how do you calculate the area of a circle using radius?
A) radius radius 3.14
B) π * r
C) 3.14* radius
D) sqrt(radius) 3.14
- 19. Which of the following is NOT a Dart data type?
A) int
B) string
C) bool
D) float
- 20. Which widget is used in Android XML to display text output?
A) Label
B) TextView
C) EditText
D) Button
- 21. What symbol is used for multiplication in Kotlin code?
A) *
B) x
C) mult()
D) times
- 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) if
B) for
C) while
D) do-while
- 24. What tool simulates a real Android device?
A) ANDROID SIMULATOR
B) ANDROID EMULATOR
C) ANDROID STIMULI
D) ANDROID PHONE
- 25. What is the default displayed text in the calculator app's TextView?
A) null
B) results
C) output
D) 0
- 26. Which control structure handles "even or odd" checking in Dart?
A) if-else
B) switch
C) loop
D) for
- 27. What is the result of 10/2 in Dart if both are integers?
A) Error
B) 5
C) 10
D) 5.0
- 28. What data type is used to store true/false values in Dart?
A) double
B) bool
C) int
D) binary
- 29. Which Dart function can be void (no return value)?
A) displayOutput()
B) All of these
C) calculateArea()
D) print()
- 30. What layout is used for button placement in the sample calculator app?
A) RelativeLayout
B) GridLayout
C) ConstraintLayout
D) LinearLayout
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