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Dyes
Dye is a synthetic and natural colouring matter that is employed in solution to stain materials particularly fabrics. All the coloured substances are not dyes. A coloured substance is known as a dye if it fulfills the subsequent conditions,
1. It should have an appropriate colour.
2. It may be lasting on the fabric either directly or with the help of mordant.
3. while fixed it must be fast to light and washing, that is it has to be resistant to the action of acids, water and alkalies, majorly to alkalies as washing soda and soap have alkaline nature.
In polar covalent molecule, one atom gets positive charge and the other one takes negative charge as known as dipole.
lab preparation of ethane
Ammonia is oxidised with air to form nitric oxide in the first step to produce nitric acid. The reaction occurs in a well insulated continuous reactor based on the stoichiometry:
what is electrcn
Ask question #imum 100 words accepted# Discussion about electrochemical serirs
What can you do to make Triethanolamine stearate less soluble in lipids?
Which set of quantum numbers for an electron of an atom is not possible: (1) n=1 l=0, m=-0, s= +1/2 (2) n=1, l=1, m=-1, s= +1/2 (3) n=1, l=0, m=0, s= -1/2 (4) n=
Azeotropic Distillation - Purification of organic compounds Azeotropic mixture is a mixture comprising constant boiling point. The most well known instance is a mixture of
Why is that Li is the only element in group 1A that reacts with dinitrogen to a nitride
Tert-butylamine Tert-butylamine cannot be prepared by the Gabriel synthesis because it would require that the nitrogen of phthalimide be alkylated with tert-butyl bromide in an
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