- 1. What keyword in Dart is used to handle errors during input?
A) error
B) catch
C) try-catch
D) try
- 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) return
B) function
C) <type> (like int, double)
D) def
- 4. Which method is used to start an Android app?
A) onStart()
B) onCreate()
C) startApp()
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) false
B) Error
C) true
D) Null
- 7. What is the result of this Dart statement: bool isTrue = 5 > 3 && 2 < 1;
A) False
B) True
C) Null
D) Error
- 8. What component allows users to enter text in Android apps?
A) GridLayout
B) TextView
C) EditText
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) res
C) Values
D) src
- 11. What function is used in Dart to print output?
A) write()
B) print()
C) output()
D) echo()
- 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:io
B) dart:core
C) dart:ui
D) dart:math
- 15. What is the official IDE for Android development?
A) MOBILE STUDIO
B) ANDROID STUDIO
C) STUDIO MOBILE
D) STUDIO ANDROID
- 16. What Kotlin variable type changes based on reassignment?
A) const
B) final
C) val
D) var
- 17. What Android file includes the line
setContentView(R.layout.activity_main)?
A) build.gradle
B) MainActivity.kt
C) layout.xml
D) AndroidManifest.xml
- 18. In Dart, how do you calculate the area of a circle using radius?
A) π * r
B) 3.14* radius
C) radius radius 3.14
D) sqrt(radius) 3.14
- 19. Which of the following is NOT a Dart data type?
A) int
B) string
C) float
D) bool
- 20. Which widget is used in Android XML to display text output?
A) EditText
B) TextView
C) Button
D) Label
- 21. What symbol is used for multiplication in Kotlin code?
A) times
B) x
C) *
D) mult()
- 22. What is the purpose of the AVD Manager?
A) Manage virtual devices
B) View application logs
C) Monitor app usage
D) Debug user input
- 23. What Dart loop is best for a known number of iterations?
A) for
B) while
C) if
D) do-while
- 24. What tool simulates a real Android device?
A) ANDROID PHONE
B) ANDROID STIMULI
C) ANDROID SIMULATOR
D) ANDROID EMULATOR
- 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) if-else
B) for
C) switch
D) loop
- 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) int
B) binary
C) bool
D) double
- 29. Which Dart function can be void (no return value)?
A) displayOutput()
B) print()
C) All of these
D) calculateArea()
- 30. What layout is used for button placement in the sample calculator app?
A) GridLayout
B) RelativeLayout
C) LinearLayout
D) ConstraintLayout
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