MCQ React Native Interview Questions and Answers

1. Which of these React native components will be used to display the name="React Native Tutorial"?

• View
• Text
• span
• p

Correct Answer-

<Text>

2. Which of the following components is the optimized way to show a long list of data?

• View
• Scrollview
• Safeareaview
• Flatlist

Correct Answer-

<Flatlist>

3. How do you style your React Native component?

• Stylesheet.create
• Stylesheet.css
• Safeareaview
• Flatlist

Correct Answer-

Stylesheet.create

4. Which of the following is the correct plugin to navigate from one screen to another?

• React Hooks
• React Navigation
• React Router
• Screen

Correct Answer-

React Navigation

5. Which of the following is the correct way to render a webpage.

	Eg. render the homepage of https://www.amazon.com/ in React Native ?

• React Native webview
• React Native HTML
• View
• ScrollView

Correct Answer-

React Native webview

6. Which of the following is the correct method(hook) to make an api call on page load?

• useState
• useEffect
• useReducer
• useSelector

Correct Answer-

useEffect

7. Which of the following is used to make sure that your input fields don't hide behind the keyboard?

• Keyboardavoidingview
• Keyboardview
• View
• Scrollview

Correct Answer-

Keyboardavoidingview

8. Which of the following is used to color the status bar of the app in android?

Correct Answer-

<StatusBar/>

9. What is the use case of ActivityIndicator in React Native?

• To display a circular loading activity
• To display a progress bar activity
• To open the app
• To exit the app

Correct Answer-

To display a circular loading activity

9. What is the use case of ActivityIndicator in React Native?

• To display a circular loading activity
• To display a progress bar activity
• To open the app
• To exit the app

Correct answer-

To display a circular loading activity

10. How do we detect platforms in React Native?

• Platform.OS
• Phone.OS
• Dimension.OS
• RN.OS

Correct answer-

Platform.OS

11. Which of the following is the correct way to store data in a local device?

• Asyncstorage
• Localstorage
• Sessionstorage
• RNStorage

Correct answer-

Asyncstorage

12. Which of the following comes under dangerous permission in Android?

• Read SMS
• Ask Location
• Show notification
• Internet access

Correct answer-

Read SMS

13. What is the correct way to read SMS for OTP?

• Ask for sms read permission
• Use the SMS retriever api
• Use firebase
• Ask of location permission

Correct answer-

Ask for sms read permission

14. Which of the following is not a valid event listener?

• onClick
• onChange
• onType
• onPress

Correct answer-

onType

15. Which of the following is not a valid component in React Native?

Correct answer-

<Div/>

16. Which of the following React Native components we cannot style?

Correct answer-

<Button/>

17. Which of the following properties is used to change the direction of row/columns?

• Flexdirection
• Justifycontent
• Alignitems
• Flex

Correct answer-

Flexdirection

18. Which of the following components is used to make an input field in React Native?

• input
• TextInput
• EditInput
• InputText

Correct answer-

<TextInput/>

19. Which of the following components is used to show an image in React Native?

• 
• <Image source={{uri: "url of image"}} />
• <images src={"url of image"}/>

Correct answer-

<Image source={{uri: "url of image"}} />

20. Which of the following software/technology is necessary to run/develop RN apps locally?

• Node JS
• jQuery
• React JS
• CSS

Correct answer-

Node JS

21. Which of the following is not a part of the React Native Library?

• Async Storage
• ActivityIndicator
• Stylesheet
• Pressable

Correct answer-

Async Storage

22. What is the result we receive once we have the location permission access?

• Both Latitude and longitude
• Readable address
• Only Latitude
• Only Longitude

Correct answer-

Both Latitude and longitude

23. What is the correct property to set the size of a Text?

• textSize
• fontSize
• fontStyle
• font-size

Correct answer-

fontSize

24. What is the correct property to set the background color of a view?

• bgColor
• background
• backgroundColor
• backgroundStyle

Correct answer-

backgroundColor

25. React native is a framework developed by?

• Facebook
• Google
• Microsoft
• Amazon

Correct answer-

Facebook

26. What is the command to start a RN project on an Android device?

• Npm run android
• Npm run ios
• Npm install
• Npm android

Correct answer-

Npm run android

27. Which of the following is not the correct way to make an api request?

• Axios.get(“url”)
• fetch(“url”)
• import(“url”)
• XMLHttpRequest

Correct answer-

import(“url”)

28. Which of the following commands is used to navigate from one screen to another in RN?

• navigation.navigate(“”)
• Window.location.href
• Location.href
• Linking

Correct answer-

navigation.navigate(“”)

29. Which of the following properties is used in React Navigation to directly open the screen on the first app open?

• initialRouteName
• startScreen
• Open
• Start

Correct answer-

initialRouteName

30. What is the event listener attached to an input component to fetch the value?

• onType
• onChange
• onClick
• onPress

Correct answer-

onChange

31. What is the recommendation of releasing an app to google play store?

• Bundle
• Apk

Correct answer-

Bundle

32. Name the Hook that is used to change state in React Native?

• useState
• useDispatch
• useSelector
• useChange

Correct answer-

useState

33. Name the Hook that is used to fetch data from the store in Redux?

• useSelector
• useDispatch
• useValue
• useData

Correct answer-

useSelector

34. Name the Hook that is used to dispatch an action in Redux?

• useDispatch
• useAction
• useSelector
• useEffect

Correct answer-

useDispatch

35. Which function is called first when a component loads in a class component?

• Constructor
• Componentdidmount
• Componentdidupdate
• Componentwillmount

Correct answer-

Constructor

36. Which is the correct place to make an api call on screen load in a class component?

• Constructor
• Componentdidmount
• Componentdidupdate
• Componentwillmount

Correct answer-

Componentdidmount

37. Which flavor of apk should be deployed to the playstore?

• Debug
• Release

Correct answer-

Release

38. Which is the correct component to build a custom button?

• Button
• TouchableOpacity & Text
• View & Text
• Text

Correct answer-

TouchableOpacity & Text

39. Which Javascript function is used to loop through an array?

• Map
• Object.keys
• Render
• Var

Correct answer-

Map

40. Which Javascript function is used to loop through an object?

• Map
• Object.keys
• Render
• Var

Correct answer-

Object.keys

41. What is the entry point of React native apps?

• Index.js
• App.js
• App.json
• Config.json

Correct answer-

Index.js

42. Which is a component that can detect various stages of press interactions?

• PressComponent
• Pressable
• TouchHandle
• Touch

Correct answer-

Pressable

43. Which module in React Native detects the platform in which the app is running?

• Platform
• Engine
• CodeDetect
• View

Correct answer-

Platform

44. is the correct command to install a react native project?

• npx create-react-app appname
• npx create-react-app init appname
• Npx react-native init appname
• Npx react-native app init

Correct answer-

Npx react-native init appname

45. Which command is used if the node_modules folder gets deleted?

• Npm install
• Npx react-native init appname
• Gradle update
• Npm update

Correct answer-

Npm install

46. Which method can be used to get the size of the screen?

• Size.app()
• Dimension
• ScreenSize
• WindowSize

Correct answer-

Dimension

47. Which property is used to open the screen on an app open in React Navigation?

• initialRouteName
• onAppopen
• startScreen
• startApp

Correct answer-

initialRouteName

48. Which property is used to hide the header in React Navigation?

• Header: false
• headerShown: false
• hideHeader: false
• noHeader: true

Correct answer-

headerShown: false

49. Which component is used to render content within the safe area boundaries of a device?

• Safeareaview
• View
• Render
• Safearea

Correct answer-

Safeareaview

50. Which property is used to limit the number of lines in a Text?

• maxLine
• lineNumber
• fixedLine
• numberOfLines

Correct answer-

numberOfLines