According to the study, marijuana is a favourite among students, as it is cheaper compared to other drugs.
The post of Karnataka Lokayukta had been lying vacant since September 2011, after Shivaraj V Patil resigned from the post in the wake of a media expose that showed irregularities in the allotment of two residential plots to him and his wife.
Twelve Bharatiya Janata Party legislators were evicted from the council and assembly proceedings were stalled, forcing its adjournment for the day.
The Congress government's move to celebrate the birth anniversary of the 18th century legendary king Tipu Sultan has stirred a controversy in Karnataka, with the Bharatiya Janata Party alleging that it was an attempt by the ruling party to strengthen its vote bank.