But anyway I read that there is OpenCL support for Nexus 10.. Does anyone have any idea if it's possible to mine on a Nexus 10?
Using Android, or rooted and booted to Linux.
There was an Android mining app at one time.
Either way, with ASICs shipping don't waste your time even looking at doing that for Bitcoin, and for Litecoin an AndLTC miner exists but you'll barely see Litecoin revenue from that either.