It depends on the level of expertise you have and if you are asking this question I can assume you are a beginner and to the answer to your question by having Rs. 30k as capital you can make somewhere...
First, you need to learn the difference between TRADING and INVESTING (sorry, I won't be explaining it here). Then learn about Indian exchanges where you can invest/trade like NSE, BSE, MCX and various...
At present Indian two stock exchanges, BSE (Bombay Stock Exchange) and NSE (National Stock Exchange) are life time high. BSE and NSE are two stock exchanges where stock trades are happening. BSE is the...