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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.
Action of grignard reagents on carbonyl compounds with examples
Explain in words why hydroboration leads to anti-Markovnikov addition of hydrogen whereas most electrophilic addtions to alkenes result in Markovnikov addition.
reactions in a mercury button cell
How to find stability of carbocations in benzene ring..??? How to find optically inactive isomers ??? (say of--C2H5Cl) How to find the weakest C-X (carbon-halogen bond in a benz
what is the pH of sodium hydroxide
K c is the equilibrium constants when the concentrations are expressed in moles/litre K c = Product of concentrate ions of products / product of concentrate ions of reactants
what are the properties of d-block elements?
90ml of an unknown concentrated chlorine was diluted with 2250l of water.The dilution now is 0.08mg/l. what is the initial concentration of the chlorine before dilution?
simple method of synthesis of the above chemical with highest yield.
Aromatic Carbonyl Compounds - Aldehydes and Ketones Aromatic aldehydes are of two types: The compounds where - CHO group is attached directly to an aromatic ring, like benza
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