Angular Quiz Test Online (30 random Questions) 2025

This quick 30-minute challenge consists of 30 random multiple-choice questions designed to test your knowledge across various Angular topics, including the introduction to Angular, TypeScript basics, project structure and fundamentals, components and communication, services and dependency injection, routing and navigation, forms in Angular, HTTP and API integration, state management with RxJS and NgRx, as well as authentication and security practices. Whether you’re just starting or looking to deepen your expertise, this quiz will enhance your understanding of Angular’s framework and best practices.

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30 Minutes Angular Quiz Test Online

Welcome to the Angular Quiz! This quick 30-minute challenge consists of 30 random multiple-choice questions designed to test your knowledge across various Angular topics, including the introduction to Angular, TypeScript basics, project structure and fundamentals, components and communication, services and dependency injection, routing and navigation, forms in Angular, HTTP and API integration, state management with RxJS and NgRx, as well as authentication and security practices. Whether you're just starting or looking to deepen your expertise, this quiz will enhance your understanding of Angular's framework and best practices.

1 / 30

1. How many components can an Angular application have?

A) Only one

B) Only ten

C) Only three

D) Unlimited

2 / 30

2. What is the role of an Injector in Angular?

A) It handles the service creation and dependency injection

B) It compiles Angular components

C) It renders templates dynamically

D) It is responsible for module configuration

3 / 30

3. How can you set global headers for all HTTP requests in Angular?

A) Using HttpInterceptor

B) Using globalHeadersService

C) Using HttpHeaders inside each request

D) Using requestOptions

4 / 30

4. How do you disable a form control in Reactive forms?

A) control.readOnly(true)

B) control.setDisabled(true)

C) control.disable()

D) control.deactivate()

5 / 30

5. Which of the following is true about dirty in Angular forms?

A) It is always false

B) It becomes true when the form is modified

C) It checks if the form is valid

D) It resets the form

6 / 30

6. What is the primary function of the package.json file in an Angular project?

A) Contains HTML templates

B) Defines project styles

C) Lists dependencies and scripts

D) Configures Angular modules

7 / 30

7. What is a common CDN used to deploy Angular applications?

A) Firebase

B) Webpack

C) Bootstrap

D) Cloudflare

8 / 30

8. What does routerLinkActive do?

A) Highlights the active link

B) Caches routes

C) Redirects users automatically

D) Disables inactive links

9 / 30

9. What is the purpose of the angular.json file?

A) Handles user authentication

B) Defines Angular modules

C) Stores configuration settings for an Angular project

D) Manages API calls

10 / 30

10. What is Angular mainly used for?

A) Database management

B) Building single-page applications (SPAs)

C) Mobile app development only

D) Backend development

11 / 30

11. Which module is required to make HTTP requests in Angular?

A) HttpModule

B) HttpClientModule

C) CommonModule

D) FormsModule

12 / 30

12. Which method is best for sending large files to a server?

A) http.put() with JSON

B) http.get()

C) http.delete()

D) http.post() with FormData

13 / 30

13. How do you select data from the NgRx store?

A) Using store.getState()

B) Using store.reduce()

C) Using store.select()

D) Using store.dispatch()

14 / 30

14. What is the purpose of the styles.scss file in an Angular project?

A) Contains global styles for the application

B) Stores API configurations

C) Defines component logic

D) Handles routing information

15 / 30

15. What Angular feature is used to automatically attach authentication headers to HTTP requests?

A) HTTP Interceptors

B) Directives

C) Route Guards

D) Services

16 / 30

16. What is an Angular component?

A) A UI building block with an HTML template, TypeScript class, and CSS styles

B) A predefined service in Angular

C) A module that controls application routing

D) A JavaScript function used to manipulate the DOM

17 / 30

17. How do you define an optional property in a TypeScript interface?

A) property: string?;

B) property! : string;

C) property: string;

D) property?: string;

18 / 30

18. Which of the following is NOT a valid Angular directive?

A) *ngRepeat

B) *ngFor

C) *ngIf

D) *ngClass

19 / 30

19. What is used to group multiple form controls in Reactive forms?

A) FormControlGroup

B) FormGroup

C) FormCollection

D) formArray

20 / 30

20. How do you specify a function's return type in TypeScript?

A) function myFunc -> number { return 10; }

B) function myFunc(): number { return 10; }

C) function myFunc = (number) => { return 10; }

D) function myFunc { return number 10; }

21 / 30

21. What is Angular Router used for?

A) Managing application state

B) Handling HTTP requests

C) Navigating between different views in an Angular application

D) Optimizing application performance

22 / 30

22. What is lazy loading in Angular routing?

A) Loading components only when needed

B) Loading routes based on user permissions

C) Loading JavaScript files dynamically

D) Caching API responses

23 / 30

23. What is an important step before deploying an Angular app?

A) Checking performance

B) Optimizing assets

C) All of the above

D) Running tests

24 / 30

24. Where should services be provided in Angular?

A) Only in components

B) In main.ts

C) Only in app.module.ts

D) In @NgModule or @Component using providedIn

25 / 30

25. Which language is primarily used in Angular development?

A) TypeScript

B) JavaScript

C) PHP

D) Python

26 / 30

26. What command is used to create a new Angular project using Angular CLI?

A) ng new project-name

B) ng create project-name

C) angular new project-name

D) ng start project-name

27 / 30

27. What is PurgeCSS used for in Angular?

A) Debugging

B) Improving accessibility

C) Optimizing JavaScript

D) Removing unused CSS

28 / 30

28. Which directive disables a form control?

A) [disabled]

B) disableControl

C) formControl.disable()

D) disable

29 / 30

29. Which of the following is NOT a valid TypeScript data type?

A) integer

B) number

C) boolean

D) string

30 / 30

30. What command is used to generate a new component in Angular?

A) ng create component-name

B) ng new component component-name

C) ng generate component component-name

D) ng add component component-name

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