Which of the following statements are correct about barbiturates?
(i) Hypnotics or sleep producing agents.
(ii) These are tranquillizers.
(iii) Non-narcotic analgesics.
(iv) Pain reducing without disturbing the nervous system.
Barbiturates are composed of barbituric acid and its derivatives classified under tranquilizers. They are used as sleep producing agents termed as hypnotics. So, Option (i) Hypnotics or sleep producing agents, and (ii) These are tranquilizers are the answers