Angular MCQs with answers Page - 98

Dear candidates you will find MCQ questions of Angular here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
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📊 Angular
Q. What does the inject() function replace?
  • (A) NgModule
  • (B) Constructor-based dependency injection
  • (C) Services
  • (D) Providers
💬 Discuss
✅ Correct Answer: (B) Constructor-based dependency injection

Explanation: inject() allows DI without constructors.

📊 Angular
Q. Which Angular feature enables hydration in SSR?
  • (A) Zone.js
  • (B) TransferState
  • (C) NgModule
  • (D) HttpClient
💬 Discuss
✅ Correct Answer: (B) TransferState

Explanation: TransferState helps transfer data from server to client.

📊 Angular
Q. What does the router-outlet directive do?
  • (A) Loads services
  • (B) Acts as placeholder for routed views
  • (C) Handles guards
  • (D) Preloads modules
💬 Discuss
✅ Correct Answer: (B) Acts as placeholder for routed views

Explanation: router-outlet displays routed components.

📊 Angular
Q. Which lifecycle hook is called when an input property changes?
  • (A) ngOnInit
  • (B) ngDoCheck
  • (C) ngOnChanges
  • (D) ngAfterViewInit
💬 Discuss
✅ Correct Answer: (C) ngOnChanges

Explanation: ngOnChanges reacts to @Input() changes.

📊 Angular
Q. Which operator is used to handle errors in RxJS?
  • (A) catchError
  • (B) throwError
  • (C) retry
  • (D) finalize
💬 Discuss
✅ Correct Answer: (A) catchError

Explanation: catchError handles observable errors.

📊 Angular
Q. Which Angular feature supports tree shaking?
  • (A) NgModules
  • (B) providedIn
  • (C) Two-way binding
  • (D) Event emitters
💬 Discuss
✅ Correct Answer: (B) providedIn

Explanation: providedIn enables tree-shakable providers.

📊 Angular
Q. Which API is used to dynamically create components?
  • (A) ComponentFactoryResolver
  • (B) Renderer2
  • (C) ViewEncapsulation
  • (D) TemplateRef
💬 Discuss
✅ Correct Answer: (A) ComponentFactoryResolver

Explanation: ComponentFactoryResolver dynamically creates components.

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