Angular JS MCQs with answers Page - 23

Here, you will find a collection of MCQ questions on Angular JS. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. How do you register a service for a lazy-loaded module?

  • (A) Using providedIn: 'root'
  • (B) Providing service in app.module.ts
  • (C) Providing service in the lazy module’s providers array
  • (D) Adding service to main.ts

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Q. Which Angular decorator is used to define an injectable service?

  • (A) @Component
  • (B) @Injectable
  • (C) @NgModule
  • (D) @Directive

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Q. Which Angular module is required to use animations?

  • (A) BrowserAnimationsModule
  • (B) HttpClientModule
  • (C) FormsModule
  • (D) RouterModule

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Q. What is the primary function of Angular Animations?

  • (A) Handle data changes
  • (B) Control the DOM structure
  • (C) Add dynamic visual effects
  • (D) Manage routing

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Q. Which Angular lifecycle hook is called when Angular checks for changes in content projected into the component?

  • (A) ngAfterContentInit
  • (B) ngAfterViewInit
  • (C) ngDoCheck
  • (D) ngOnChanges

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Q. Which pipe is used to transform text to uppercase in Angular?

  • (A) uppercase
  • (B) lowercase
  • (C) titlecase
  • (D) capitalize

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Q. What is the purpose of the AsyncPipe in Angular templates?

  • (A) Manually subscribe to Observables
  • (B) Automatically subscribe and unsubscribe from Observables or Promises
  • (C) Transform synchronous data
  • (D) Format dates asynchronously

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Q. What does Angular Elements allow you to do?

  • (A) Create Angular components
  • (B) Build Angular modules
  • (C) Use Angular components as custom elements (web components) in non-Angular apps
  • (D) Create Angular pipes

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Q. Which decorator is used to specify metadata for an Angular pipe?

  • (A) @Pipe
  • (B) @Directive
  • (C) @Component
  • (D) @Injectable

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Q. Which method in a service would you use to share data reactively across components?

  • (A) Subject or BehaviorSubject from RxJS
  • (B) LocalStorage
  • (C) Input decorator
  • (D) Output decorator

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