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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.
The α -particle scattering experiment of Rutherford concluded that: (1) The nucleus is made up of protons and neutrons (2) The number of electrons is exactly equal to number
what is the inductive effect of water
prepration,reactions ,uses and reactivity of dihydric alcohols
20.0 mL of 0.2 M CaCl 2 diluted with water to 100.0 mL. Calculate [CaCl 2 ], [Ca 2+ ] and [Cl - ]. Produce from concentrated hydrochloric acid (12 M) 3.0 L 0.60 M HCl solution.
I need organic chemistry exams in pdf form Project Description: Hi, i need someone to get 100 unique organic chemistry exams from US universities and colleges. The needs f
name given to substance combination
explain how adsorption as a method of water treatment
Antiseptics doesn''t harm living cells whereas disinfectants harm living cells.and disinfectants are used to sterilize instruments and utensils but cant be used on skin....and the
Explain the Effects of Temperature on multicomponent systems? For some of the derivations in this chapter, we will need an expression for the rate at which the ratio μ i /T var
Ring substitution in aromatic ethers Alkoxy group is ortho and para directing and it directs the incoming groups to ortho and para position. It becomes the aromatic ring leads
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