Dyes - chemistry in action, Chemistry

Assignment Help:

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.


Related Discussions:- Dyes - chemistry in action

Explain the concept of environmental impact assessment, Question: (i) ...

Question: (i) Explain the concept of Environmental Impact Assessment (EIA) and state its main objectives. (ii) List 3 activities (from the marine sector) which require an

Lyman series, For a hydrogen atom, calculate the wavelength (in nm) of an e...

For a hydrogen atom, calculate the wavelength (in nm) of an emitted photon in the Lyman series that results from the transition n = 3 to n = 1

Heat capacity(Specific Heat), A 75g piece of Ag is heated to 80 degree celc...

A 75g piece of Ag is heated to 80 degree celcius and drooped into 50g of water at 23.2 degree celcius.The final tempereture of Ag-H2O mixture is 27.6degree celcius.what is the spec

Surface chemistry, calculate the surface coverage obtained after exposure t...

calculate the surface coverage obtained after exposure to a pressure of 10 torr of CO for 20s at 300K. sticking probability of CO is 0.9

Determine molecular mass of atoms, Q. Determine Molecular Mass of Atoms ...

Q. Determine Molecular Mass of Atoms Ans: 6.02 x 10 23   is a really big number. It would be hard to count that many of any object. That's one of the reasons we count atoms b

Explain about electron-dot structures, Q. Explain about Electron-Dot Struct...

Q. Explain about Electron-Dot Structures? Write an electron-dot structure for a impartial atom of arsenic an element used in semiconductor materials because of its electron con

Compound is highest covalent, Which compound is highest covalent: (1) L...

Which compound is highest covalent: (1) LiCl                                                 (2) FiF                          (3) LiBr              (4) LiI Ans: LiI

Antidepressants - drugs and medicines, Antidepressants: These drugs ar...

Antidepressants: These drugs are specified to patients along with shattered confidence. These provide a feeling of well being and confidence in the person of depressed mood. H

Explain basic physical properties of gas, Q. Explain Basic physical propert...

Q. Explain Basic physical properties of Gas? Ans. Gases are the least dense phase of matter. Gases can be easily expanded or compressed. They exert pressure equally in

What do you understand by the term public health, Question : (a) (i) ...

Question : (a) (i) What do you understand by the term "Public Health"? (ii) What are the three core functions of public health? (iii) How does a public health system

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd