Where do I invest 5000 rupees for maximum returns?

Returns are a function of the risk you take and how long you are willing to stay invested. If you take too high a risk, chances are you may lose money. If you pull out too early, you do not get compounding to work for you.

To find your risk profile, check this out. Based not the score, you can decide whether to invest in small cap, midcap or large cap funds. Or to instead go for lower risk funds like debt funds.