a strand test is carried out after applying colour to a hair. You remove the colour of a strand of the hair to check if you have the desired result (colour)
test for starch- dissolving in water+heating+cooling+3-4 drops of tincture iodine, if present, dark blue colour will appear. test for colour- dissolving in water + HCL ,if metanil yellow colour is present, pink colour will appear.
Turmeric powder is commonly used as an indicator. When added to a substance, it turns red in the presence of a base and yellow in the presence of an acid. To test if salt is acidic or basic, mix a small amount of turmeric powder with water and add a pinch of the salt. If the turmeric turns red, the salt is basic; if it turns yellow, the salt is acidic.
well , the colour of potassium chloride is a lilac colour :) hope this helps
green
colour blind
white
do a test
The colour would change to a purple, dark purple colour.
blue
purple top
The colour turns brick Red .