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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.
Van der Waals repulsions Because severe van der Waals repulsions occur among the tert-butyl groups in compound A at normal bond lengths and angles, the only way for the molecu
This is an example of pinacone pinacone rearrangemnt acetone with Mg and H2O forms 2,3 Dimethylbutane2.3 diol which on reacting with H+ from forms first a carbocation on carbon 2
which one will be chosen as cathode, Ag/Ag+ or Ag/Agi/i
What is the net flux of the uniform electric field of Exercise 1.15 through a cube of side 20 cm oriented so that its faces are parallel to the coordinate planes?
What is bayer''s sttains theory
The f-block elements contains of two series of inner transition elements i.e. lanthanoids (the fourteen elements subsequent lanthanum) and actinoids (the fourteen elements subseque
Classify each reaction and give the name of all the chemical formula involved for each number. 1. Na2CO3(s) + SiO2(s) ? Na2SiO3(l) + CO2(g) 2. 2 Mg(NO3)2(s) ? 2 Mg(NO2)2(s) + O2
Composition of Nucleic acids Nucleic acids such as proteins and carbohydrates are polymer. The simple units which make up the nucleic acid are known as nucleotides. Nucleotides
(a) Explain in terms of ionic equilibria why the aqueous solution of a salt derived from a weak acid and a strong base (e.g. sodium phenolate) has a pH greater than 7. (b) B
what is the mass of a proton and electron
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