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Vulcanization: Vulcanization is very widely used in rubber technology to improve the properties such as low tensile strength, plastic nature, thickness etc. by adding some chemicals like sulphur, hydrogen sulphide, benzene chloride etc. it is done by heating of raw rubber with sulphur at 100: 140 degree centigrade temperature. The added sulphur combines chemically as the double bonds of different rubber springs. Sulphur can also bring about vulcanization without affecting the double bonds in the polymer molecule, by eliminating H2S. The rate of vulcanization of rubber is quite slow and also depends upon the types and quality of rubber used. But, by using certain organic compounds called accelerators, vulcanization reaction speed up.
The diffraction of x-ray by a crystal gives 1st order ref at 14•12'' if lattice dist is 3.14 A• wht is the wavelength of x-ray
I have to prepare an assignment on Kohlrausch''s law .So what topics should I include under this topic for an effective assignment ??????
Physical Properties of Benzoic Acid (a) Benzoic Acid is a white crystalline solid. (b) Benzoic Acid has m.p. 394 K. (c) Benzoic Acid is sparingly soluble in cold water bu
the complete equation for forming a peptide bond through dehydration
Q. Show Multiplying Quantities Written in Scientific Notation? Multiplying Quantities Written in Scientific Notation Solve the following problem. (2 * 10 14 cm) * (9 *
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Amines are soluble in organic solvents whereas ammonium salts are not. Is it true? Ans) yes because amine is contain R-NH2 group where R is carbon groups so they are in polar nat
Draw a figure to show splitting of degenerate d orbitals in an octahedral crystal field. How does the magnitude of decide the real configuration old orbitals in a difficult enti
The uncertainty in momentum of an electron is 1 x10 -5 kg- m/s . The uncertainty in its position will be (h= 6.62 x 10 -34 kg - m 2 / s): (1) 1.05 x 10- 28 m
SHOW A LABELED SCHEMATIC DIAGRAM OF A SINGLE BEAM ATOMIC ABSORPTION SPECTROSCOPY
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