- 1. What keyword in Dart is used to handle errors during input?
A) catch
B) try-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) <type> (like int, double)
B) def
C) function
D) return
- 4. Which method is used to start an Android app?
A) startApp()
B) onStart()
C) run()
D) onCreate()
- 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) true
B) false
C) Null
D) Error
- 7. What is the result of this Dart statement: bool isTrue = 5 > 3 && 2 < 1;
A) False
B) Error
C) Null
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) setOnTapListener
B) setOnClickListener
C) listenClick
D) addClickListener
- 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.xml
D) AndroidManifest.file
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:math
B) dart:io
C) dart:core
D) dart:ui
- 15. What is the official IDE for Android development?
A) STUDIO ANDROID
B) MOBILE STUDIO
C) ANDROID STUDIO
D) STUDIO MOBILE
- 16. What Kotlin variable type changes based on reassignment?
A) val
B) var
C) const
D) final
- 17. What Android file includes the line
setContentView(R.layout.activity_main)?
A) layout.xml
B) build.gradle
C) AndroidManifest.xml
D) MainActivity.kt
- 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) bool
C) float
D) string
- 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) x
B) mult()
C) *
D) times
- 22. What is the purpose of the AVD Manager?
A) Debug user input
B) Monitor app usage
C) View application logs
D) Manage virtual devices
- 23. What Dart loop is best for a known number of iterations?
A) for
B) while
C) do-while
D) if
- 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) output
C) 0
D) results
- 26. Which control structure handles "even or odd" checking in Dart?
A) if-else
B) for
C) loop
D) switch
- 27. What is the result of 10/2 in Dart if both are integers?
A) Error
B) 5.0
C) 5
D) 10
- 28. What data type is used to store true/false values in Dart?
A) binary
B) double
C) int
D) bool
- 29. Which Dart function can be void (no return value)?
A) All of these
B) calculateArea()
C) displayOutput()
D) print()
- 30. What layout is used for button placement in the sample calculator app?
A) LinearLayout
B) GridLayout
C) RelativeLayout
D) ConstraintLayout
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