React JS/React JS Mcq Question Set 1 MCQs :- multiple choice questions and answers. e.g React JS MCQS,React JS Mock Tests , React JS Practice Papers ,React JS Sample Test,React JS Sample questions

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Question 1: What is React.js?

Open-source JavaScript back-end library

JavaScript front-end library to create a database

Free and open-source JavaScript front-end library

None of the mentioned

Total MCQS Questions are 45 in this paper React JS Mcq Question Set 1
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