Income from share trading is taxable or not...?

indian (MBA) (40 Points)

21 June 2016  
Sir/Madam... i have been investing in shares & earned reasonable profits also in last 5-6 months. i want to know whether income so earned is taxable, if yes then under which head & at what rate it is taxable... if it is taxable then can we do share trading by opening Dmat account in the name of a person whose income is well below 250000 per anum...pls reply