- 1. What keyword in Dart is used to handle errors during input?
A) try
B) error
C) try-catch
D) catch
- 2. What is the minimum recommended API level for Android projects?
A) API 25
B) API 14
C) API 19
D) API 21
- 3. In Dart, which keyword is used to define a function that returns a value?
A) return
B) function
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) Null
B) true
C) false
D) Error
- 7. What is the result of this Dart statement: bool isTrue = 5 > 3 && 2 < 1;
A) Null
B) True
C) Error
D) False
- 8. What component allows users to enter text in Android apps?
A) GridLayout
B) Button
C) EditText
D) TextView
- 9. Which Kotlin function handles button clicks in the calculator?
A) setOnClickListener
B) setOnTapListener
C) addClickListener
D) listenClick
- 10. What folder in Android Studio stores layout XML files?
A) src
B) res
C) Values
D) Manifest
- 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.file
B) AndroidManifest.com
C) AndroidManifest.xml
D) AndroidManifest.org
E) AndroidManifest.www
- 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 ANDROID
B) STUDIO MOBILE
C) ANDROID STUDIO
D) MOBILE 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) MainActivity.kt
B) layout.xml
C) AndroidManifest.xml
D) build.gradle
- 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) 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) *
B) x
C) times
D) mult()
- 22. What is the purpose of the AVD Manager?
A) Manage virtual devices
B) Monitor app usage
C) View application logs
D) Debug user input
- 23. What Dart loop is best for a known number of iterations?
A) if
B) do-while
C) for
D) 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) output
B) results
C) null
D) 0
- 26. Which control structure handles "even or odd" checking in Dart?
A) for
B) if-else
C) loop
D) switch
- 27. What is the result of 10/2 in Dart if both are integers?
A) 5
B) 10
C) 5.0
D) Error
- 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) displayOutput()
C) calculateArea()
D) All of these
- 30. What layout is used for button placement in the sample calculator app?
A) LinearLayout
B) GridLayout
C) ConstraintLayout
D) RelativeLayout
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