Chandigarh, Feb. 16 -- Mahinder Singh, a resident of Sector 38-A, in Chandigarh, was arrested with seven gram smack here on Thursday, said police. A case has been registered under Section 21 (contravention in relation to manufactured drugs and preparations) of the Narcotic Drugs and Psychotropic Substances (NDPS) Act at Sector-39 police station....