<prompt> Secobarbitone is ?Long acting barbiturateIntermediate acting barbiturateSho acting barbiturateUltra sho acting barbiturate  <response>: Ans. is c i.e., Sho acting barbiturate Long acting barbiturates - Phenobarbitone, Mephobarbitone. Sho acting barbiturates - Butobarbitone, secobarbitone, Pentobarbitone. Ultrasho acting - Thiopentone, Methohexitone, Hexobarbitone. 