Tony, unable to sleep, takes a tranquilizer along with barbiturates. The combined action of the drugs prove to be fatal and kill him. This condition resulting from the combination of two depressants taken at a time is known as _________.
a. potentiation
b. chipping
c. tolerance
d. dependence
Question 2
A similarity between cocaine and amphetamine is that both ________.
a. produce paranoid psychotic reactions at very low doses
b. stimulate the central nervous system
c. are synthetic stimulants
d. primarily act as analgesics and painkillers