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All React Native Interview Questions

Practice the complete collection of React Native interview questions including theory, coding, MCQs and real interview problems.

Total Questions: 139Topics: 33Complete interview preparation

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All React Native Interview Questions (139)

Scroll through every important React Native question asked in real interviews. Includes MCQs, subjective questions, and coding prompts.

1. What is React Native primarily used for?

Difficulty: EasyType: MCQTopic: RN Basics

Building responsive websites
Building cross-platform mobile apps using JavaScript
Creating server-side Node.js applications
Developing Chrome browser extensions

React Native is a JavaScript framework that allows developers to build native mobile applications for iOS and Android using the React library. It bridges JavaScript with native platform components, offering near-native performance and a single shared codebase.

Correct Answer: Building cross-platform mobile apps using JavaScript

2. Which statement best describes the difference between React and React Native?

Difficulty: EasyType: MCQTopic: RN Basics

React is for mobile, React Native is for web
React Native uses native mobile components while React uses web DOM elements

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All React Native Interview Questions

Overview

1. What is React Native primarily used for?

2. Which statement best describes the difference between React and React Native?

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3. Which of the following is NOT a core React Native component?

4. What does the React Native bridge do?

5. What is the key difference between state and props in React Native?

6. Which React hook is used to add state to a functional component in React Native?

7. What is JSX in the context of React Native?

8. Which method allows writing platform-specific code in React Native?

9. Explain the rendering process in React Native.

10. Differentiate between class components and functional components in React Native.

11. Describe common lifecycle methods in React Native class components.

12. What are the main advantages of using React Native?

13. What are some limitations or challenges of React Native?

14. React Native supports which two main types of components?

15. What is the primary purpose of props in React Native?

16. Which of the following statements about props is true?

17. What is 'state' in a React Native component?

18. Why should you avoid modifying the state directly in React Native?

19. What does 'lifting state up' mean in React Native?

20. What is the purpose of useEffect in functional components?

21. Which technique is used to render elements conditionally in React Native?

22. Why are keys important when rendering lists in React Native?

23. Differentiate between props and state with examples.

24. How does state affect the React Native component lifecycle?

25. How can a child component communicate changes back to its parent in React Native?

26. What is the Context API and how is it useful in state management?

27. What are common mistakes developers make with state and props?

28. Which of the following is not a valid way to style components in React Native?

29. What is the main advantage of using StyleSheet.create() in React Native?

30. What is the default flexDirection value in React Native?

31. Which property controls how children are distributed along the main axis in Flexbox?

32. Which property aligns items vertically when flexDirection is 'row'?

33. Which property allows flex items to move onto multiple lines in React Native?

34. Which Flexbox property allows a single child to override the parent’s alignment settings?

35. Which property is used to control an element’s position relative to its parent in React Native?

36. Does React Native support the CSS gap property for Flexbox?

37. How do you create a responsive layout in React Native?

38. When should you use flex over fixed or percentage widths?

39. What are common Flexbox mistakes in React Native layouts?

40. How does zIndex work in React Native compared to web CSS?

41. What are performance best practices for React Native layouts?

42. What is React Navigation used for in React Native?

43. Which command installs React Navigation in a React Native project?

44. Which of the following libraries is required to enable gestures in React Navigation?

45. Which navigator provides a classic push-and-pop navigation pattern?

46. Which function is used to create a stack navigator in React Navigation v6?

47. How do you navigate to another screen in React Navigation?

48. How can you pass parameters between screens in React Navigation?

49. How do you access parameters passed to a screen?

50. Which package is used to create bottom tab navigation?

51. Explain how nested navigators work in React Navigation.

52. What is a Drawer Navigator and when should you use it?

53. Describe how the navigation stack works in React Navigation.

54. Can you pass functions between screens in React Navigation?

55. What is deep linking in React Navigation and how is it configured?

56. Which React hook lets you add internal state to functional components in React Native?

57. What is the purpose of the useEffect hook?

58. Which hook provides a way to hold a mutable value that doesn’t trigger re-renders?

59. What problem does the Context API solve in React Native?

60. What does useReducer help with in React Native?

61. Why is Redux often used in React Native projects?

62. What does the Redux store do?

63. What are actions in Redux?

64. What is the correct order of data flow in Redux?

65. Compare the Context API and Redux in terms of usage and scalability.

66. What is middleware in Redux and why is it important?

67. Explain the purpose of Redux Thunk in React Native.

68. What are common performance issues in state management and how can they be prevented?

69. How can you persist Redux state in React Native between app restarts?

70. Which built-in method is commonly used for making HTTP requests in React Native?

71. How do you install Axios in a React Native project?

72. Why is async / await preferred over plain promises in React Native?

73. Which block is used with async / await to handle request errors?

74. Which statement correctly compares Axios and Fetch?

75. Which property in the response object helps check if the Fetch API request succeeded?

76. Which library supports setting request timeouts directly?

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