Question

Give me the Main Questions from The lesson "INDIGO"
___________
Class:- 12th
Subject:- English Core
Language:- English and Hindi

Answer 1

Indigo is a plant that has a blue dye in it. You probably have indigo dyed cloth in your closet, in a pair of blue jeans. Jeans are dyed with indigo. People have used indigo alone or in combination with henna to dye their hair black for at least 4000 years. During the 19th and 20th century indigo was such a common hair dye in Europe and the US, that it was marketed as "black henna". Henna is never black, henna never dyes hair black, but powdered indigo resembles powdered henna and it DOES dye hair black. So, when indigo was sold as hair dye, it was called "black henna". When it was sold to dye cloth, it was called indigo. There are are still many boxes of indigo in stores marked "black henna" as a legacy of this old misnomer.

Some boxes of "black henna" are real indigo. Some boxes are cellulostic material and PPD, para-phenylenediamine, a hazardous aniline (coal tar) dye. If you open a box of "black henna" that is indigo, you'll see green powder that smells like frozen peas. If you mix that with water, you'll see a blue glaze form on the surface after a while. If you plop some wet indigo powder on paper or cotton, blue dye will leak out. Indigo hair dye looks like what you see above. This indigo is from Mehandi.

If you open a box of "black henna" or "black mehndi" and the powder is brownish black or black, it probably has PPD in it. If you mix it with water, blackish brown liquid will leak out. That stuff is not henna. It's not indigo. It's chemicals and it may hurt you.

Indigo is a bit of a chore to use as a hair dye, but the results are gorgeous!

Answer 2

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