The Narcotics Control Bureau (NCB) arrested a Bolivian woman from Mumbai airport for allegedly carrying black cocaine.
Black cocaine is a mixture of regular cocaine base with various substances to camouflage typical appearance (e.g. charcoal), to interfere with colour-based drug tests (cobalt salts form deep red complexes in solution), to make the mixture undetectable by drug-sniffing dogs as activated carbon may sufficiently absorb trace odours.
#Indianexpress
Course Purchase Query 