Infinite union / Infinite intersection are not closed under Regular Language and DCFL. Because number of states must be finite in that two cases
For NCFL , though there are a huge possibility of input be there, but these aquire a memory space, which is finite. So, NCFL also not closed under Infinite union / Infinite intersection.
But for CSL, Recursive, REL it is closed. As because these are not concern with finite amount of memory.