Edit in JSFiddle

Result
HTML
JavaScript

<body>
    <input type="checkbox" name="BE"  id="Qualification">BE
    <input type="checkbox" name="ME"  id="Qualification">ME
    <input type="checkbox" name="BSC"  id="Qualification">BSC
    <input type="checkbox" name="MBA"  id="Qualification">MBA
    <br />
    <button id="myButton">Click Me</button>
    <button onclick="location.reload();">Reset</button>
    </body>

 $(document).ready(function()
    {
    $("#myButton").click(function()
    {
    $(":checkbox:nth(2)").attr("checked","checked");
    });
    });