Hi Aparna

For that you need to use custom JS to implement this scenario.

For implementing full screen when quiz starts, use this JS

document.querySelector("body").requestFullscreen({ navigationUI: "show" })

.then(function() {

})

.catch(function(error) {    

});

To close the quiz on exiting full screen or pressing alt or win key use this js script

document.onkeydown = function (e) {        

          if(e.altKey)

            document.getElementById('press1').click();

         if (e.key == "Meta")

            document.getElementById('press1').click();                

}

          if (document.addEventListener){ 

             document.addEventListener('fullscreenchange', exitHandler, false);                 

             document.addEventListener('mozfullscreenchange', exitHandler, false); 

             document.addEventListener('MSFullscreenChange', exitHandler, false); 

             document.addEventListener('webkitfullscreenchange', exitHandler, false);

}

function exitHandler(){ 

             if (!document.webkitIsFullScreen && !document.mozFullScreen && !document.msFullscreenElement) 

{  // Run code on exit    document.getElementById('press1').click(); //Action to be execute on violating terms like exit fulscreen

}}

If hope it will work for you

Regards

Murali