reactJS mcq(multiple choice) question with answers

reactJS MCQ (Multiple Choice Question) with answers

1. What describes the ReactJS?
2. ReactJS written in which language?
3. Which command is used to create the new react app?
4. What is Babel?
5. Why react is mainly used for?
6. JSX stands for?
7. What will be the output of the following code?
import React, { Component } from 'react';  
const App = () => {  
            <h1 className = "hello" >{25+20}</h1>  
export default App;
8. Why JSX used for?
9. What do you mean by ES6?

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