83. CNS stimulant agents belong to
(a) Respiratory stimulants
(b) Psychomotor stimulants
(c) Psychomimetic agents
(d) All of the above

84.Which of the following general anaesthetics has poor muscle relaxant action ?
(a) Ether
(b) Nitrous oxide
(c) Halothane
(d) Isoflurane

85.Which of the following general anaesthetics has the most marked uterine relax-ant action ?
(a) Propofol

(b) Halothane
(c) Nitrous oxide
(d) Ether

86. The distinguishing feature of enflurane compared to halothane is its
(a) Pleasant and nonirritating nature
(b) Propensity to precipitate seizures
(c) Propensity to cause hypotension
(d) Bronchodilator action

87.The drug/drugs used mainly for induction of general anaesthesia is/are
(a) Thiopentone sodium
(b) Fentanyl + droperidol
(c) Ketamine
(d) All of the above

88.The anaesthetic action of thiopentone sodium is characterized by
(a) Good muscle relaxation
(b) Poor analgesia
(c) Sensitization of heart to adrenaline
(d) No postoperative residual CNS depression

89. Dissociative anaesthesia is produced by
(a) Ketamine
(b) Fentanyl + droperidol
(c) Propofol
(d) Both (a) and (b)