<prompt> The following anaesthetic drug causes pain on intravenous adminstration:MidazolamPropofolKetamineThiopentone sodium  <response>: B i.e. Propofol - Incidence of pain on injection after intravenous administration of drug in small vein eg. dorsum of wrist or hand is 80 for etomidate, 40 for propofol, 20 for methohexital 1 and 10 for thiopental 2.5 anesthetic agents - This incidence is greatly reduced if a large vein is used, if a small dose of lidocaine 10mg is injected sholy before. Thiopental 2.5 also causes pain on IV administration but the incidence is much higher for propofol. 