JSFiddle - React, Tailwind, and code Playground

HTML

<table>
    <tr class="radioList">
        <td>Question 1: </td>
        <td>
            <input type="radio" name="q1" value="qwe1">
            <input type="radio" name="q1" value="qwe2">
            <input type="radio" name="q1" value="qwe3">
        </td>
    </tr>
        <tr class="radioList">
        <td>Question 2: </td>
        <td>
            <input type="radio" name="q2" value="qwe1">
            <input type="radio" name="q2" value="qwe2">
            <input type="radio" name="q2" value="qwe3">
        </td>
    </tr>
    <tr class="radioList">
        <td>Question 3: </td>
        <td>
            <input type="radio" name="q3" value="qwe1">
            <input type="radio" name="q3" value="qwe2">
            <input type="radio" name="q3" value="qwe3">
        </td>
    </tr>
    
</table>
<button onClick="isCheck();">Go!</button>

JavaScript

function isCheck() {

    var isOk = true;
    $('.radioList').each(function(){
        var countChecked = $(this).find(':checked').length;

        if(countChecked!=1) {
            $(this).css('color', 'red');
            isOk = false;
        } else {
             $(this).css('color', 'black');
        }
    }); 
    return isOk;
}