the DAT conducted at IISc is very different to that of IDC. IDC had questions more or less same as that of CEED; but IISc had an important part carrying the engineering questions (most of which came from fluid mechanics). so anyone aspiring for iisc should once go through their technical stuffs!!!! well, i hardly found solutions of anyone of them :)
and what i think is that there is more emphasis on interviews !!
i had interview for around half an hour.. they had 5 panel members.. they started with a discussion about touch screen; it's uses and its future... as my background is electrical, they asked some technical question!! and some random questions checking my communication skill!! some general awareness questions etc...
and Prasanna, i didnt forget to mention about your blog too!! they were very happy to know about it.