Angular JS MCQs with answers Page - 10

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. Which service is used to interact with the browser's URL in Angular?

  • (A) HttpClient
  • (B) Router
  • (C) Location
  • (D) DomSanitizer

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Q. What does Angular's DomSanitizer help with?

  • (A) Performance tuning
  • (B) Animation optimization
  • (C) Security against XSS attacks
  • (D) Router configuration

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

  • (A) capitalize
  • (B) uppercase
  • (C) textFormat
  • (D) stringify

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Q. How can you disable a button based on form validation status?

  • (A) [disabled]='form.valid'
  • (B) [disabled]='!form.valid'
  • (C) [disable]='form.valid'
  • (D) [disable]='!form.invalid'

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Q. Which Angular CLI command is used to serve the application?

  • (A) ng build
  • (B) ng deploy
  • (C) ng serve
  • (D) ng start

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Q. Which module is needed to use Angular's reactive forms?

  • (A) FormsModule
  • (B) ReactiveFormsModule
  • (C) HttpClientModule
  • (D) CommonModule

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Q. What happens when you use *ngIf and *ngFor on the same element?

  • (A) Both directives work simultaneously
  • (B) Only *ngIf works
  • (C) Error occurs
  • (D) Angular merges both

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Q. What is a HostListener in Angular?

  • (A) Listens to events on child components
  • (B) Subscribes to observables
  • (C) Listens to DOM events on the host element
  • (D) Captures global events only

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Q. Which command builds the Angular app for production?

  • (A) ng run
  • (B) ng prod
  • (C) ng build --prod
  • (D) ng serve --prod

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Q. What does the async pipe handle automatically?

  • (A) Form validation
  • (B) DOM rendering
  • (C) Subscription and unsubscription
  • (D) Routing and guards

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