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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.
Which kind of volcano is the most destructive? Well each type of volcano can be very destructive and if you are talking in human loss of life terms than the answer is any type
explain curie progogine principle
what are the pattern og ionic radii and atomic radii for p block element?
Physical properties of Halo-arenes (i) Physical state: they are colourless liquid or crystalline solid. (ii) Solubility: Halo-arenes are not soluble with water, but dissolve
Energy of the electron in Hydrogen atom is given by: (1) E n = 131.38/ n 2 x kj mol -1 (2) E n = 131.33/n xkj mol -1 (3) E n = 1313.3/ n 2 x kj mol
The shape of P -orbital is : (1) Elliptical (2) Spherical (3) Dumb-bell (4) Complex geometrical Ans: Dumb-bell
what is chemistry
How many moles of gas occupy 98 L at a pressure of 2.8 atmospheres and a temperature of 292 K?
name the physical state of matter which can be easily compressed.
What is difference among silica used in TLC and HPLC column? Ans) TLC is known as thin layer chromatography. The simple methods works on the principle of adsorption, where as HP
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