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What is vulcanization
The process of vulcanization was discovered by Charles Good Year in 1839. He found that when natural rubber is heated with sulphur, its tensile strength, elasticity and resistance to swelling enhances tremendously. This process is called vulcanization. Vulcanization process brings stiffening of the rubber by anchoring and restricting the intermolecular movement of rubber chains. Tensile strength enhances, resilience enhances, and becomes more resistant to water, organic sol- vents, light and air.
The electronic configuration of four elements are given in brackets: L (1s 2 , 2s 2 , 2p 1 , ) M (1s 1 , 2s 2 , 2p 5 ) Q (1s 2, 2s 2 , 2p 6 3s 1 ,) R ( 1s 1 , 2s 2 , 2p
diagonal relationship between boron and silicon
Hydrolysis of an ester into acid and alcohol can be done by acid or alkali. which is the best method and why?
Explain the properties of ionic bonding
1st A group because the oxides and hydrides are alkaline in nature.
A medicine dropper is an instrument used to calculate small amount of liquids, usually in milligrams.
what is molality?
what is alternative form of cholesterol formed in plants and prokaryotes ?
What are biamperometric titrations?
how many group of acid radicals
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