Go to an optician
It change from orange/brown colour to blue/black if starch is present
Both cows milk and water-buffalo's milk produce a violet colour when tested with biuret solution because they both contain protein.
litmus paper turns blue litmus red when tested on an acid and red litmus blue when tested on a base
Cobalt (II) chloride dihydrated (purple colour) and with more water Cobalt (II) chloride hexahydrated (pink colour) .
in a variegated leaf only the green areas of the leaf turns blue black in colour when tested for starch what is the best way to explan that
When being tested with biuret reagent, protein turns a blue to lilac color. However, starches when tested do change to a blackish blue color.
Colour transmissions were first tested in Australia from 19 October 1974 on commercial networks. However, colour television only officially began on 1 March 1975. On this date, Channel ABN2 in Sydney, New South Wales, produced the first colour news broadcast. The newsreader was James Dibble.
Bleach typically turns a greenish-yellow color when tested with universal indicator due to its high pH level. This indicates that bleach is a strong base.
In Australia, colour transmissions began to be tested on the commercial television networks on 19 October 1974. It can be presumed that some viewers had purchased a colour TV by then. Colour television was officially implemented on 1 March 1975.
By dissolving the pH solution a colour change will occur in the solution that should be tested.Compairing the colour of solution to the colours marked on of pH chart we can find out if the solution we tested is of alkaline nature or of acidic nature or neutral.Solutions of pH7are neutral solutions.Solutions below pH7 are acidic solutions and those above pH7 are alkaline solutions.
Please get a surgery done immediately and get the lump tested as soon as possible.
Some of the bromine is consumed by forming dibromides from the unsaturated compounds tested. The dibromides do not usually have color, as bromine molecules do.