Angular JS MCQs with answers Page - 100

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. What is the purpose of HttpInterceptor?

  • (A) Routing control
  • (B) Global request/response handling
  • (C) State management
  • (D) Template rendering

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Q. Which Angular feature allows signals-based reactivity?

  • (A) RxJS Subjects
  • (B) Zone.js
  • (C) Angular Signals
  • (D) ChangeDetectorRef

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Q. What does ChangeDetectorRef.detach() do?

  • (A) Destroys the component
  • (B) Stops change detection for the component
  • (C) Refreshes the view
  • (D) Triggers routing

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Q. Which lifecycle hook runs after every change detection cycle?

  • (A) ngOnInit
  • (B) ngAfterViewInit
  • (C) ngDoCheck
  • (D) ngOnDestroy

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Q. Which RxJS operator combines multiple observables and emits once all complete?

  • (A) combineLatest
  • (B) merge
  • (C) forkJoin
  • (D) zip

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Q. What does ViewChild return by default?

  • (A) Component instance only
  • (B) ElementRef or component/directive instance
  • (C) HTML string
  • (D) Observable

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Q. Which Angular form type is immutable?

  • (A) Template-driven forms
  • (B) Reactive forms
  • (C) Hybrid forms
  • (D) Dynamic forms

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Q. Which directive allows projecting external content?

  • (A) ngTemplateOutlet
  • (B) ngIf
  • (C) ngContent
  • (D) ngSwitch

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Q. Which Angular API enables manual change detection?

  • (A) ApplicationRef
  • (B) ChangeDetectorRef
  • (C) NgZone
  • (D) Injector

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Q. Which guard is used to prevent navigation away from a route?

  • (A) CanActivate
  • (B) CanLoad
  • (C) CanDeactivate
  • (D) Resolve

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