I would like to know if i use Instant Exchange
https://exch.cx/ and convert my bitcoins to litecoin, will it serve as a mixing too and my coins can't be traced (act as a mixer) ?
Meaning if i do multiple transactions using that Instant Exchange and convert Bitcoin to Litecoin. (The destination address of LTC remains the same in all the transactions )
That could be a mixing but not in a deeper level, but your transactions can be traceable, especially if a particular exchange is obligated to disclose your transaction information on their platform. We have a government agency that oversees this, known as the Anti-Money Laundering Council. So, if you simply desire privacy for mixing and haven't engaged in any illegal activities, that should be sufficient to achieve your purpose.