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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 maximum number of electrons present in an orbit l= 3 , is: (1) 6 (2) 8 (3) 10 (4) 14 Ans: 14
C
does lowered pH of water affect dissolved oxygen?
name given to substance combination
Plz tell me the units of absorptivity if it has any units
#question.colloidal states notes
He- is p block element
How to find the atomicity of an element
Position isomerism: It is due to the difference in the position of the substituent atom or group or an unsaturated linkage in similar carbon chain. A. Carboxylic, aldehydes
Explain in brief about the Wire drawing Drawing: Refers to shaping in a punch press of flat blanks of sheet metal into different shapes. This process is fundamentally forcing
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