Nifty is in corrective mode on daily basis but started an up move from the later phase of last day 's trading session. So the coming session may well be choppy but trade-able enough.
Supports: 4935/18-4895 is big time crucial to maintain this immediate up move live. A convincing break below that can really turn the table in favor of bears again. 4840 can be another support below those levels which is likely to be broken for further targets 4715-4620.
Resistances: As we are talking about very short term uptrend (minute time frame), larger time frame is still under selling pressure and 4970-4995/5000 is immediate and quite important place, where some profit booking/shorts can be done. But if 4895 comes first and approaches 5000, it's likely to be broken for the final tgt 5040-5055/70 zone where this up move will be tested again, and can be the last shorting zone.