I am trading in nse india using bar charts and candle sticks. I buy and sell using signals from the charts. I want to know what is the suitable time frame for intra trading 5 min, 10 min, or 15 min.
There is no such time frame. Use whatever interval you are comfortable with. I would advise you to study on your own before deciding. Check from your experience, after how much time the charts give their results. Trade on the basis of that observations. It may be 5 minutes to 5 hours. The only thing is that it should be comfortable and profitable for you.