70 Angular MCQs Objective Type Quiz & MCQs with Answers for Interview Preparation | Gyansetu

Practice these MCQs to strengthen your Angular knowledge and prepare confidently for job interviews or certification exams.
Whether you’re aiming to become a front-end specialist, a full-stack developer, or simply sharpen your skills in component-driven architecture and reactive programming — you’re in the right place.
70+ Angular MCQs covering everything from components, services, directives, routing, forms, observables, and advanced concepts — complete with answers to help you test and solidify your understanding, no guesswork involved.

Section 1: Angular Basics – 10 MCQs

1. Which command is used to create a new Angular project?
   A. ng generate app
   B. ng new
   C. ng create
   D. npm start
   ✅ Answer: B
2. What is the purpose of Angular CLI?
   A. To test applications
   B. To style components
   C. To scaffold and manage Angular projects
   D. To host the app
   ✅ Answer: C
3. Which architecture pattern does Angular follow?
   A. MVC
   B. MVVM
   C. Component-based
   D. MVP
   ✅ Answer: C
4. Which file is the entry point of an Angular app?
   A. index.html
   B. main.ts
   C. app.module.ts
   D. app.component.ts
   ✅ Answer: B
5. Which command is used to serve an Angular app locally?
   A. ng build
   B. ng init
   C. ng serve
   D. ng run
   ✅ Answer: C
6. What decorator is used to define a component in Angular?
   A. @Injectable
   B. @Component
   C. @Directive
   D. @Module
   ✅ Answer: B
7. Which of the following is not a valid Angular data binding type?
   A. Event binding
   B. Property binding
   C. Two-way binding
   D. String binding
   ✅ Answer: D
8. How do you bind an input value to a variable using two-way data binding?
   A. [(ngBind)]
   B. [value]=”var”
   C. [(ngModel)]=”var”
   D. bind:value=”var”
   ✅ Answer: C
9. Which module is needed for using two-way binding with ngModel?
   A. ReactiveFormsModule
   B. HttpClientModule
   C. FormsModule
   D. BrowserModule
   ✅ Answer: C
10. What will this display?

<p>{{ 2 + 3 }}</p>

A. 2 + 3
B. Five
C. 5
D. Error
✅ Answer: C

---

Section 2: Components & Templates – 10 MCQs

11. What file extension is used for Angular components?
    A. .js
    B. .ts
    C. .component.ts
    D. .module.ts
    ✅ Answer: C
12. What is the default selector in a component class?
    A. templateUrl
    B. selector
    C. styleUrls
    D. providers
    ✅ Answer: B
13. Which part defines the HTML template in a component?
    A. templateFile
    B. templateRef
    C. templateUrl
    D. viewUrl
    ✅ Answer: C
14. How do you pass data from parent to child component?
    A. @Output()
    B. @Child()
    C. @Input()
    D. @Provide()
    ✅ Answer: C
15. Which lifecycle hook runs after the component’s first display?
    A. ngInit()
    B. ngRender()
    C. ngAfterViewInit()
    D. ngStart()
    ✅ Answer: C
16. Which of the following is NOT a component lifecycle hook?
    A. ngOnInit
    B. ngOnDestroy
    C. ngAfterInit
    D. ngAfterContentInit
    ✅ Answer: C
17. What will be logged here?

ngOnInit() {

  console.log(“Init called”);

}

A. On each reload
B. Before component mounts
C. After constructor, once
D. On every change
✅ Answer: C

18. Which decorator makes a class injectable into components?
    A. @Component
    B. @Injectable
    C. @Provider
    D. @Service
    ✅ Answer: B
19. Which binding passes a variable from HTML to component?
    A. [(…)]
    B. [property]
    C. (event)
    D. {{ variable }}
    ✅ Answer: B
20. What does @ViewChild() do?
    A. Binds HTML content
    B. Selects parent component
    C. Gets reference to a child element
    D. Binds event
    ✅ Answer: C

---

Section 3: Directives & Pipes – 10 MCQs

21. Which directive displays an element based on a condition?
    A. *ngShow
    B. *ngVisible
    C. *ngIf
    D. *ngHide
    ✅ Answer: C
22. What is the output?

<p *ngIf=”false”>Hello</p>

A. Hello
B. false
C. Nothing
D. Syntax error
✅ Answer: C

23. Which directive is used for looping in Angular?
    A. *ngEach
    B. *ngFor
    C. *ngLoop
    D. *ngRepeat
    ✅ Answer: B
24. Syntax of ngFor is:
    A. *ngFor=”let item of items”
    B. *ngFor=”item in items”
    C. *ngFor=”let items in item”
    D. ngFor=”items”
    ✅ Answer: A
25. What is a pipe used for?
    A. Looping
    B. Conditional rendering
    C. Data transformation
    D. Routing
    ✅ Answer: C
26. What is the output of this pipe?

{{ ‘angular’ | uppercase }}

A. angular
B. Angular
C. ANGULAR
D. Error
✅ Answer: C

27. Which pipe formats a date?
    A. datePipe
    B. date
    C. formatDate
    D. datetime
    ✅ Answer: B
28. Which is a built-in Angular directive?
    A. ngBind
    B. ngValue
    C. ngModel
    D. ngContent
    ✅ Answer: C
29. Custom pipes must implement which interface?
    A. OnInit
    B. PipeCreator
    C. PipeTransform
    D. CustomPipe
    ✅ Answer: C
30. A structural directive changes:
    A. Element position
    B. DOM layout
    C. CSS styling
    D. None
    ✅ Answer: B

Section 4: Routing & Navigation – 10 MCQs

31. Which module is required for Angular routing?
    A. RouterModule
    B. AppRouting
    C. RoutingModule
    D. NavigationModule
    ✅ Answer: A
32. What is the correct syntax for a route path?

{ path: ‘home’, component: HomeComponent }

A. True
B. False
✅ Answer: A

33. How do you navigate programmatically in Angular?
    A. Router.navigate(‘path’)
    B. navigateTo(‘path’)
    C. this.router.navigate([‘path’])
    D. go(‘path’)
    ✅ Answer: C
34. What does <router-outlet> do?
    A. Defines routing logic
    B. Loads the route’s component view
    C. Stores routing state
    D. Triggers event routing
    ✅ Answer: B
35. What is the purpose of a wildcard route (**)?
    A. Redirect unknown routes
    B. Define default component
    C. Catch homepage requests
    D. Replace route names
    ✅ Answer: A
36. What is route guard in Angular?
    A. Directive for routes
    B. Prevent unauthorized access
    C. Used for animations
    D. Optimize routing speed
    ✅ Answer: B
37. Which interface is used to create a route guard?
    A. RouteCheck
    B. RouterGuard
    C. CanActivate
    D. GuardRoute
    ✅ Answer: C
38. How do you add a route redirect?

{ path: ”, redirectTo: ‘/home’, pathMatch: ‘full’ }

A. True
B. False
✅ Answer: A

39. Which module provides the RouterLink directive?
    A. AppModule
    B. BrowserModule
    C. RouterModule
    D. FormsModule
    ✅ Answer: C
40. What is lazy loading in Angular?
    A. Loads components after delay
    B. Loads modules on demand
    C. Reduces initial bundle size
    D. Both B and C
    ✅ Answer: D

---

Section 5: Forms – 10 MCQs

41. What are the two types of forms in Angular?
    A. HTML and JavaScript forms
    B. Template-driven and reactive forms
    C. Reactive and hybrid forms
    D. Input and submit forms
    ✅ Answer: B
42. Which module is needed for reactive forms?
    A. ReactiveFormsModule
    B. FormsModule
    C. HttpClientModule
    D. BrowserModule
    ✅ Answer: A
43. What is FormControl used for?
    A. Control layout
    B. Group components
    C. Handle form inputs
    D. None
    ✅ Answer: C
44. Which method resets a form in reactive forms?
    A. resetForm()
    B. clearForm()
    C. form.reset()
    D. form.clear()
    ✅ Answer: C
45. Which directive is used for two-way binding in forms?
    A. ngModel
    B. modelForm
    C. ngBind
    D. formBind
    ✅ Answer: A
46. What is the output of this template-driven form input?

<input [(ngModel)]=”name” name=”username”>

A. One-way binding
B. Two-way binding
C. No binding
D. Error
✅ Answer: B

47. In Reactive forms, what is FormGroup used for?
    A. Styling
    B. Group form controls
    C. Route forms
    D. Resetting forms
    ✅ Answer: B
48. What’s the correct way to initialize a FormControl?

new FormControl(‘Initial Value’)

A. True
B. False
✅ Answer: A

49. Which is used to validate email format?
    A. Validators.required
    B. Validators.email
    C. Validators.minLength
    D. Validators.pattern
    ✅ Answer: B
50. Which object returns the state of the form?
    A. status
    B. formState
    C. valid
    D. form.valid
    ✅ Answer: D

---

Section 6: Services, Dependency Injection, Observables – 10 MCQs

51. What does a service in Angular provide?
    A. Business logic
    B. UI logic
    C. CSS styling
    D. Routes
    ✅ Answer: A
52. How do you make a class a service?
    A. Add @Injectable() decorator
    B. Add @Service()
    C. Import it to AppComponent
    D. Register in CLI
    ✅ Answer: A
53. What is Dependency Injection (DI)?
    A. HTML injection
    B. Injecting scripts
    C. Providing service to component
    D. Database connection
    ✅ Answer: C
54. Which RxJS operator is used to handle asynchronous data?
    A. of()
    B. async()
    C. subscribe()
    D. map()
    ✅ Answer: C
55. What is the role of subscribe() in observables?
    A. Create service
    B. Handle data response
    C. Display templates
    D. Bind HTML
    ✅ Answer: B
56. Which RxJS operator transforms values?
    A. filter()
    B. pipe()
    C. switchMap()
    D. map()
    ✅ Answer: D
57. What will this observable return?

of(1, 2, 3).subscribe(console.log);

A. 123
B. [1, 2, 3]
C. Logs 1, then 2, then 3
D. Error
✅ Answer: C

58. How to inject a service into a component?
    A. Via HTML binding
    B. Via constructor
    C. Via selector
    D. Cannot inject
    ✅ Answer: B
59. Which keyword is used to define a provider in Angular module?
    A. services
    B. inject
    C. providers
    D. exports
    ✅ Answer: C
60. Which statement is true about observables?
    A. They’re synchronous
    B. They emit multiple values over time
    C. They return promises
    D. Not part of Angular
    ✅ Answer: B

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Section 7: Advanced Angular – 10 MCQs

61. What is Change Detection in Angular?
    A. Detects HTML changes
    B. Watches for file changes
    C. Updates the view when data changes
    D. Event tracking
    ✅ Answer: C
62. Which strategy optimizes change detection?
    A. OnPush
    B. Default
    C. Manual
    D. Auto
    ✅ Answer: A
63. What is the purpose of Angular Universal?
    A. Adds routing
    B. Enables SSR (Server Side Rendering)
    C. Removes templates
    D. Enables animations
    ✅ Answer: B
64. What is a feature module?
    A. Module for root routes
    B. External service
    C. Module with isolated functionality
    D. Bootstrap file
    ✅ Answer: C
65. What is Ahead-of-Time (AOT) compilation?
    A. Compiles in runtime
    B. Compiles templates before app loads
    C. Compiles during runtime
    D. Removes JS files
    ✅ Answer: B
66. What is a singleton service in Angular?
    A. Service created once and reused
    B. Service created per component
    C. External API
    D. Repeated service
    ✅ Answer: A
67. How do you share data between unrelated components?
    A. Input binding
    B. Output binding
    C. Services
    D. Query binding
    ✅ Answer: C
68. What does ng-content do?
    A. Binds styles
    B. Displays default content
    C. Projects external content into component
    D. Renders dynamic CSS
    ✅ Answer: C
69. How do you lazy load a module?
    A. Using loadModule()
    B. Using RouterModule.forRoot
    C. With dynamic import in routes
    D. Using AppModule
    ✅ Answer: C
70. Which CLI command builds a production app?
    A. ng serve
    B. ng prod
    C. ng build –prod
    D. ng make
    ✅ Answer: C

Mastering these Angular MCQs is a valuable step toward building a strong foundation in component-based architecture, TypeScript, reactive forms, routing, and modern front-end development practices.
If you’re ready to elevate your career with hands-on projects and expert-led instruction, join our Angular course in Gurgaon at Gyansetu and become industry-ready for front-end and full-stack development roles.