A poison which is illuminous, translucent and waxy?
D i.e. Yellow phosphorus - Yellow (or white) phosphorus exists in translucent, waxy, luminous cylinders of garlicky smell & tasteQ. - Iodine occurs as brown (bluish-black), soft and scaly crystals with a metallic lusture and unpleasant taste. It gives off violet coloured vapour having a characteristic odour at all temperatures. - Caustic alkalis occurs as white powders. Whereas venom (salive) of cobra is faint transparent yellow and slightly viscous which becomes slightly turbid when exposed to sun.
Iodine
Ammonium bromide
Cobra venom
Yellow phosphorus