└── README.md


/README.md:
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  1 | ## MCQ React Native Interview Questions and Answers
  2 | 
  3 | 
  4 | #### 1. Which of these React native components will be used to display the name="React Native Tutorial"?
  5 | - View
  6 | - Text
  7 | - span
  8 | - p
  9 | <details>
 10 |     <summary>Correct Answer-</summary>
 11 |   
 12 |     <Text>
 13 | </details>
 14 | 
 15 | 
 16 | #### 2. Which of the following components is the optimized way to show a long list of data?
 17 | - View
 18 | - Scrollview
 19 | - Safeareaview
 20 | - Flatlist
 21 | <details>
 22 |     <summary>Correct Answer-</summary>
 23 |   
 24 |     <Flatlist>
 25 | </details>
 26 | 
 27 | 
 28 | #### 3. How do you style your React Native component?
 29 | - Stylesheet.create
 30 | - Stylesheet.css
 31 | - Safeareaview
 32 | - Flatlist
 33 | <details>
 34 |     <summary>Correct Answer-</summary>
 35 |   
 36 |     Stylesheet.create
 37 | </details>
 38 | 
 39 | #### 4. Which of the following is the correct plugin to navigate from one screen to another?
 40 | - React Hooks
 41 | - React Navigation
 42 | - React Router
 43 | - Screen
 44 | <details>
 45 |     <summary>Correct Answer-</summary>
 46 |   
 47 |     React Navigation
 48 | </details>
 49 | 
 50 | #### 5. Which of the following is the correct way to render a webpage.
 51 | 		Eg. render the homepage of https://www.amazon.com/ in React Native ?
 52 | - React Native webview
 53 | - React Native HTML
 54 | - View
 55 | - ScrollView
 56 | <details>
 57 |     <summary>Correct Answer-</summary>
 58 |   
 59 |     React Native webview
 60 | </details>
 61 | 
 62 | #### 6. Which of the following is the correct method(hook) to make an api call on page load?
 63 | - useState
 64 | - useEffect
 65 | - useReducer
 66 | - useSelector
 67 | <details>
 68 |     <summary>Correct Answer-</summary>
 69 |   
 70 |     useEffect
 71 | </details>
 72 | 
 73 | #### 7. Which of the following is used to make sure that your input fields don't hide behind the keyboard?
 74 | - Keyboardavoidingview
 75 | - Keyboardview
 76 | - View
 77 | - Scrollview
 78 | <details>
 79 |     <summary>Correct Answer-</summary>
 80 |   
 81 |     Keyboardavoidingview
 82 | </details>
 83 | 
 84 | #### 8. Which of the following is used to color the status bar of the app in android?
 85 | - <StatusBar/>
 86 | - <View>
 87 | - <Safeareaview>
 88 | - <Imagebackground />
 89 | <details>
 90 |     <summary>Correct Answer-</summary>
 91 |   
 92 |     <StatusBar/>
 93 | </details>
 94 | 
 95 | #### 9. What is the use case of ActivityIndicator in React Native?
 96 | - To display a circular loading activity
 97 | - To display a progress bar activity
 98 | - To open the app
 99 | - To exit the app
100 | <details>
101 |     <summary>Correct Answer-</summary>
102 |   
103 |     To display a circular loading activity
104 | </details>
105 | 
106 | #### 9. What is the use case of ActivityIndicator in React Native?
107 | - To display a circular loading activity
108 | - To display a progress bar activity
109 | - To open the app
110 | - To exit the app
111 | <details>
112 |     <summary>Correct answer-</summary>
113 |   
114 |     To display a circular loading activity
115 | </details>
116 | 
117 | #### 10. How do we detect platforms in React Native?
118 | - Platform.OS
119 | - Phone.OS
120 | - Dimension.OS
121 | - RN.OS
122 | <details>
123 |     <summary>Correct answer-</summary>
124 |   
125 |     Platform.OS
126 | </details>
127 | 
128 | #### 11. Which of the following is the correct way to store data in a local device?
129 | - Asyncstorage
130 | - Localstorage
131 | - Sessionstorage
132 | - RNStorage
133 | <details>
134 |     <summary>Correct answer-</summary>
135 |   
136 |     Asyncstorage
137 | </details>
138 | 
139 | #### 12. Which of the following comes under dangerous permission in Android?
140 | - Read SMS
141 | - Ask Location
142 | - Show notification
143 | - Internet access
144 | <details>
145 |     <summary>Correct answer-</summary>
146 |   
147 |     Read SMS
148 | </details>
149 | 
150 | #### 13. What is the correct way to read SMS for OTP?
151 | - Ask for sms read permission
152 | - Use the SMS retriever api
153 | - Use firebase
154 | - Ask of location permission
155 | <details>
156 |     <summary>Correct answer-</summary>
157 |   
158 |     Ask for sms read permission
159 | </details>
160 | 
161 | #### 14. Which of the following is not a valid event listener?
162 | - onClick
163 | - onChange
164 | - onType
165 | - onPress
166 | <details>
167 |     <summary>Correct answer-</summary>
168 |   
169 |     onType
170 | </details>
171 | 
172 | #### 15. Which of the following is not a valid component in React Native?
173 | - <Image/>
174 | - <Text/>
175 | - <Div/>
176 | - <View/>
177 | <details>
178 |     <summary>Correct answer-</summary>
179 |   
180 |     <Div/>
181 | </details>
182 | 
183 | #### 16. Which of the following React Native components we cannot style?
184 | - <View/>
185 | - <ScrollView/>
186 | - <Image/>
187 | - <Button/>
188 | <details>
189 |     <summary>Correct answer-</summary>
190 |   
191 |     <Button/>
192 | </details>
193 | 
194 | #### 17. Which of the following properties is used to change the direction of row/columns?
195 | - Flexdirection
196 | - Justifycontent
197 | - Alignitems
198 | - Flex
199 | <details>
200 |     <summary>Correct answer-</summary>
201 |   
202 |     Flexdirection
203 | </details>
204 | 
205 | #### 18. Which of the following components is used to make an input field in React Native?
206 | - input
207 | - TextInput
208 | - EditInput
209 | - InputText
210 | <details>
211 |     <summary>Correct answer-</summary>
212 |   
213 |     <TextInput/>
214 | </details>
215 | 
216 | #### 19. Which of the following components is used to show an image in React Native?
217 | - <image href="url of image"/>
218 | - <img src="url of image"/>
219 | - <Image source={{uri: "url of image"}} />
220 | - <images src={"url of image"}/>
221 | <details>
222 |     <summary>Correct answer-</summary>
223 |   
224 |     <Image source={{uri: "url of image"}} />
225 | </details>
226 | 
227 | #### 20. Which of the following software/technology is necessary to run/develop RN apps locally?
228 | - Node JS
229 | - jQuery
230 | - React JS
231 | - CSS
232 | <details>
233 |     <summary>Correct answer-</summary>
234 |   
235 |     Node JS
236 | </details>
237 | 
238 | #### 21. Which of the following is not a part of the React Native Library?
239 | - Async Storage
240 | - ActivityIndicator
241 | - Stylesheet
242 | - Pressable
243 | <details>
244 |     <summary>Correct answer-</summary>
245 |   
246 |     Async Storage
247 | </details>
248 | 
249 | #### 22. What is the result we receive once we have the location permission access?
250 | - Both Latitude and longitude
251 | - Readable address
252 | - Only Latitude
253 | - Only Longitude
254 | <details>
255 |     <summary>Correct answer-</summary>
256 |   
257 |     Both Latitude and longitude
258 | </details>
259 | 
260 | #### 23. What is the correct property to set the size of a Text?
261 | - textSize
262 | - fontSize
263 | - fontStyle
264 | - font-size
265 | <details>
266 |     <summary>Correct answer-</summary>
267 |   
268 |     fontSize
269 | </details>
270 | 
271 | #### 24. What is the correct property to set the background color of a view?
272 | - bgColor
273 | - background
274 | - backgroundColor
275 | - backgroundStyle
276 | <details>
277 |     <summary>Correct answer-</summary>
278 |   
279 |     backgroundColor
280 | </details>
281 | 
282 | #### 25. React native is a framework developed by?
283 | - Facebook
284 | - Google
285 | - Microsoft
286 | - Amazon
287 | <details>
288 |     <summary>Correct answer-</summary>
289 |   
290 |     Facebook
291 | </details>
292 | 
293 | #### 26. What is the command to start a RN project on an Android device?
294 | - Npm run android
295 | - Npm run ios
296 | - Npm install
297 | - Npm android
298 | <details>
299 |     <summary>Correct answer-</summary>
300 |   
301 |     Npm run android
302 | </details>
303 | 
304 | #### 27. Which of the following is not the correct way to make an api request?
305 | - Axios.get(“url”)
306 | - fetch(“url”)
307 | - import(“url”)
308 | - XMLHttpRequest
309 | <details>
310 |     <summary>Correct answer-</summary>
311 |   
312 |     import(“url”)
313 | </details>
314 | 
315 | #### 28. Which of the following commands is used to navigate from one screen to another in RN?
316 | - navigation.navigate(“”)
317 | - Window.location.href
318 | - Location.href
319 | - Linking
320 | <details>
321 |     <summary>Correct answer-</summary>
322 |   
323 |     navigation.navigate(“”)
324 | </details>
325 | 
326 | #### 29. Which of the following properties is used in React Navigation to directly open the screen on the first app open?
327 | - initialRouteName
328 | - startScreen
329 | - Open
330 | - Start
331 | <details>
332 |     <summary>Correct answer-</summary>
333 |   
334 |     initialRouteName
335 | </details>
336 | 
337 | #### 30. What is the event listener attached to an input component to fetch the value?
338 | - onType
339 | - onChange
340 | - onClick
341 | - onPress
342 | <details>
343 |     <summary>Correct answer-</summary>
344 |   
345 |     onChange
346 | </details>
347 | 
348 | #### 31. What is the recommendation of releasing an app to google play store?
349 | - Bundle
350 | - Apk
351 | <details>
352 |     <summary>Correct answer-</summary>
353 |   
354 |     Bundle
355 | </details>
356 | 
357 | #### 32. Name the Hook that is used to change state in React Native?
358 | - useState
359 | - useDispatch
360 | - useSelector
361 | - useChange
362 | <details>
363 |     <summary>Correct answer-</summary>
364 |   
365 |     useState
366 | </details>
367 | 
368 | #### 33. Name the Hook that is used to fetch data from the store in Redux?
369 | - useSelector
370 | - useDispatch
371 | - useValue
372 | - useData
373 | <details>
374 |     <summary>Correct answer-</summary>
375 |   
376 |     useSelector
377 | </details>
378 | 
379 | #### 34. Name the Hook that is used to dispatch an action in Redux?
380 | - useDispatch
381 | - useAction
382 | - useSelector
383 | - useEffect
384 | <details>
385 |     <summary>Correct answer-</summary>
386 |   
387 |     useDispatch
388 | </details>
389 | 
390 | #### 35. Which function is called first when a component loads in a class component?
391 | - Constructor
392 | - Componentdidmount
393 | - Componentdidupdate
394 | - Componentwillmount
395 | <details>
396 |     <summary>Correct answer-</summary>
397 |   
398 |     Constructor
399 | </details>
400 | 
401 | #### 36. Which is the correct place to make an api call on screen load in a class component?
402 | - Constructor
403 | - Componentdidmount
404 | - Componentdidupdate
405 | - Componentwillmount
406 | <details>
407 |     <summary>Correct answer-</summary>
408 |   
409 |     Componentdidmount
410 | </details>
411 | 
412 | #### 37. Which flavor of apk should be deployed to the playstore?
413 | - Debug
414 | - Release
415 | <details>
416 |     <summary>Correct answer-</summary>
417 |   
418 |     Release
419 | </details>
420 | 
421 | #### 38. Which is the correct component to build a custom button?
422 | - Button
423 | - TouchableOpacity & Text
424 | - View & Text
425 | - Text
426 | <details>
427 |     <summary>Correct answer-</summary>
428 |   
429 |     TouchableOpacity & Text
430 | </details>
431 | 
432 | #### 39. Which Javascript function is used to loop through an array?
433 | - Map
434 | - Object.keys
435 | - Render
436 | - Var
437 | <details>
438 |     <summary>Correct answer-</summary>
439 |   
440 |     Map
441 | </details>
442 | 
443 | #### 40. Which Javascript function is used to loop through an object?
444 | - Map
445 | - Object.keys
446 | - Render
447 | - Var
448 | <details>
449 |     <summary>Correct answer-</summary>
450 |   
451 |     Object.keys
452 | </details>
453 | 
454 | #### 41. What is the entry point of React native apps?
455 | - Index.js
456 | - App.js
457 | - App.json
458 | - Config.json
459 | <details>
460 |     <summary>Correct answer-</summary>
461 |   
462 |     Index.js
463 | </details>
464 | 
465 | #### 42. Which is a component that can detect various stages of press interactions?
466 | - PressComponent
467 | - Pressable
468 | - TouchHandle
469 | - Touch
470 | <details>
471 |     <summary>Correct answer-</summary>
472 |   
473 |     Pressable
474 | </details>
475 | 
476 | #### 43. Which module in React Native detects the platform in which the app is running?
477 | - Platform
478 | - Engine
479 | - CodeDetect
480 | - View
481 | <details>
482 |     <summary>Correct answer-</summary>
483 |   
484 |     Platform
485 | </details>
486 | 
487 | #### 44. is the correct command to install a react native project?
488 | - npx create-react-app appname
489 | - npx create-react-app init appname
490 | - Npx react-native init appname
491 | - Npx react-native app init
492 | <details>
493 |     <summary>Correct answer-</summary>
494 |   
495 |     Npx react-native init appname
496 | </details>
497 | 
498 | #### 45. Which command is used if the node_modules folder gets deleted?
499 | - Npm install
500 | - Npx react-native init appname
501 | - Gradle update
502 | - Npm update
503 | <details>
504 |     <summary>Correct answer-</summary>
505 |   
506 |     Npm install
507 | </details>
508 | 
509 | #### 46. Which method can be used to get the size of the screen?
510 | - Size.app()
511 | - Dimension
512 | - ScreenSize
513 | - WindowSize
514 | <details>
515 |     <summary>Correct answer-</summary>
516 |   
517 |     Dimension
518 | </details>
519 | 
520 | #### 47. Which property is used to open the screen on an app open in React Navigation?
521 | - initialRouteName
522 | - onAppopen
523 | - startScreen
524 | - startApp
525 | <details>
526 |     <summary>Correct answer-</summary>
527 |   
528 |     initialRouteName
529 | </details>
530 | 
531 | #### 48. Which property is used to hide the header in React Navigation?
532 | - Header: false
533 | - headerShown: false
534 | - hideHeader: false
535 | - noHeader: true
536 | <details>
537 |     <summary>Correct answer-</summary>
538 |   
539 |     headerShown: false
540 | </details>
541 | 
542 | #### 49. Which component is used to render content within the safe area boundaries of a device?
543 | - Safeareaview
544 | - View
545 | - Render
546 | - Safearea
547 | <details>
548 |     <summary>Correct answer-</summary>
549 |   
550 |     Safeareaview
551 | </details>
552 | 
553 | #### 50. Which property is used to limit the number of lines in a Text?
554 | - maxLine
555 | - lineNumber
556 | - fixedLine
557 | - numberOfLines
558 | <details>
559 |     <summary>Correct answer-</summary>
560 |   
561 |     numberOfLines
562 | </details>
563 | 


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