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Teflon - Halogen Derivatives
1. Teflon is plastic such as substance produced by the polymerisation of tetrafluoroethylene (CF2 = CF2).
2. Tetrafluoroethylene is made while chloroform is treated along with antimony trifluoride and hydrofluoric acid.
3. On polymerisation tetrafluoroethylene makes a plastic-like material that is called teflon.
4. Chemically Teflon is inert molecules. It is not influenced by hard acids and even by boiling aqua-regia. It is invariable at high temperatures. It is, thus, required for electrical insulation, creation of gasket materials and non-sticking frying pans.
Perfluorocarbons (PFCs): Perfluorocarbons (C n F 2n+2 ) are acquired by controlled fluorination of vapourized alkanes diluted along with nitrogen gas in the existence of a cata
BIOINORGANIC CHEMISTRY Life is sometimes thought of as 'carbon chemistry', but around 25 components are essential for life. It is normal to divide these into trace elements an
Isomers, which vary in the orientation of groups around the double bounded carbon atoms, are known as geometrical Isomers. It is also known as Cis-Trans Isomerism.
Which of the following sets of orbitals may degenerate : (1) 2s, 2p x , 2p y (2) 3s, 3p x , 3d xy (3) 1s, 2s, 3s
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Penta valent element has one electron more than 4 electrons which could be used for conduction while the trivalent elements has 1 electron less , this can also be seen as a hole
What is the de-Broglie wavelength associated with the hydrogen electron in its third orbit: (1) 9.96x 10 -10 cm (2) 9.96x 10 -8 cm (3) 9.96x 1
Q. Define Alcoholic Acidity? Alcoholic acidity is defined as mg of H 2 SO 4 required for 100 g of the sample to have the same alcohol soluble acids. Grains or their milled
The correct sequence of increasing covalent character is represented by: (1) LiCl 2 (2) BaCl 2 (3) NaCl 2
D BLOCK ELIMENT
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