identifying gases

colourless and odorless causes a growing splint to grow brighter or relight

colourless and odourless causes a lighted splint to make a squeaky pop and be extinguished

colourless and odourless forms white ppt in lime water redissolves on continued bubbling

colourless with sharp acid odour forms white fumes when brought near a drop of conc ammonia solution on a glass rod

colourless with pungent odour turns moist red litmus paper blue forms white fumes when brought near a drop of conc hydrochloric acid on a glass rod

yellow green with sharp choking odour causes moist blue litmus paper to turn red and then bleaches it white

colourless with pungent odour turns acidified potassium manganate solution from purple to colourless turns acidified potassium dichromate solution from orange to green

brown with sharp irritating odour brown gas causes moist blue litmus paper to turn red

colourless and odourless causes dry cobalt chloride paper to change from blue to pink causes anhydrous copper sulfate to change from white to blue