Which of the following is not dissociative? a. pcp b. mescaline c. ketamine d. dextromethorphan

B. Mescaline

Mescaline is not a dissociative drug but a psychedelic alkaloid of phenethylamine class that has hallucinogenic effects. 

Meanwhile, phencyclidine (PCP), ketamine and dextromethorphan at high doses is classified as dissociative general anesthetic that distort perceptions of sight and sound and produce feelings of detachment from the environment and self. Other effects include analgesia, hallucinations, mania and amnesia.

birth control pills, the birth control patch, and the vaginal birth control ring are these hormones prevent pregnancy mainly by stopping ovulation