- 1. What keyword in Dart is used to handle errors during input?
A) try-catch
B) catch
C) error
D) try
- 2. What is the minimum recommended API level for Android projects?
A) API 19
B) API 21
C) API 14
D) API 25
- 3. In Dart, which keyword is used to define a function that returns a value?
A) function
B) return
C) def
D) <type> (like int, double)
- 4. Which method is used to start an Android app?
A) startApp()
B) onCreate()
C) run()
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) false
B) Null
C) Error
D) true
- 7. What is the result of this Dart statement: bool isTrue = 5 > 3 && 2 < 1;
A) False
B) True
C) Error
D) Null
- 8. What component allows users to enter text in Android apps?
A) Button
B) EditText
C) GridLayout
D) TextView
- 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) res
C) Manifest
D) src
- 11. What function is used in Dart to print output?
A) echo()
B) output()
C) print()
D) write()
- 12. What file defines the app's structure and permissions in Android projects?
A) AndroidManifest.com
B) AndroidManifest.www
C) AndroidManifest.file
D) AndroidManifest.xml
E) AndroidManifest.org
- 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:core
C) dart:math
D) dart:io
- 15. What is the official IDE for Android development?
A) STUDIO MOBILE
B) MOBILE STUDIO
C) STUDIO ANDROID
D) ANDROID STUDIO
- 16. What Kotlin variable type changes based on reassignment?
A) const
B) val
C) final
D) var
- 17. What Android file includes the line
setContentView(R.layout.activity_main)?
A) MainActivity.kt
B) AndroidManifest.xml
C) build.gradle
D) layout.xml
- 18. In Dart, how do you calculate the area of a circle using radius?
A) sqrt(radius) 3.14
B) radius radius 3.14
C) 3.14* radius
D) π * r
- 19. Which of the following is NOT a Dart data type?
A) bool
B) float
C) int
D) string
- 20. Which widget is used in Android XML to display text output?
A) Label
B) EditText
C) Button
D) TextView
- 21. What symbol is used for multiplication in Kotlin code?
A) x
B) times
C) *
D) mult()
- 22. What is the purpose of the AVD Manager?
A) Manage virtual devices
B) Debug user input
C) View application logs
D) Monitor app usage
- 23. What Dart loop is best for a known number of iterations?
A) do-while
B) if
C) while
D) for
- 24. What tool simulates a real Android device?
A) ANDROID PHONE
B) ANDROID EMULATOR
C) ANDROID STIMULI
D) ANDROID SIMULATOR
- 25. What is the default displayed text in the calculator app's TextView?
A) results
B) null
C) 0
D) output
- 26. Which control structure handles "even or odd" checking in Dart?
A) loop
B) for
C) switch
D) if-else
- 27. What is the result of 10/2 in Dart if both are integers?
A) 5
B) Error
C) 5.0
D) 10
- 28. What data type is used to store true/false values in Dart?
A) bool
B) double
C) int
D) binary
- 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) RelativeLayout
C) ConstraintLayout
D) LinearLayout
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