If you get around 100 in Cracku's full length,how much can you expect in CAT..?

It depends on which mock you have taken. The earlier ones (DASHCAT 1-10) are more difficult and you can expect a 25% increase in actual CAT.

The recent ones (DASHCAT 12-20) are much more closer to CAT and you can expect a similar score in CAT.

All the best.

Scoring around 110 gives one around 99 percentile in mocks, which cracku claims might get converted to 99.5+ percentile in d day, but a 110 is a mere 92 odd percentile in real cat