In this context of changing and challenging market requirements, Gas Insulated Substation GIS has found a broad range of applications in power systems for more than two decades because of its high reliability, easy maintenance and small ground space requirement etc. SF6 has been of considerable technological interest as an insulation medium in GIS because of its superior insulating properties, high dielectric strength at relatively low pressure and its thermal and chemical stability. SF6 is generally found to be very sensitive to field perturbations such as those caused by conductor surface imperfections and by conducting particle contaminants. The presence of contamination can therefore be a problem with gas insulated substations operating at high fields.
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There are two main divisions, organic and inorganic.Mention three areas in which H 2 SO 4 plays an important role.
Ans. (i) It is used in the manufacture of fertilizers such as (NH 4) 2 SO 4, calcium superphosphate. (ii)It is used as an electrolyte in storage batteries.
(iii)It is used in petroleum refining, detergent industry and in the manufacture of paints, pigments and dyes. This course provides students with an in-depth knowledge of the principles and applications of chemistry.
Topics include chemical nomenclature, atomic theory, stoichiometry, periodicity, chemical bonding, thermochemistry, gas laws, and properties of solids and liquids. Draw Lewis structures for ionic compounds.
In Section we saw how ions are formed by losing electrons to make cations or by gaining electrons to form anions. The astute reader may have noticed something: Many of the ions that form have eight electrons in their valence shell.
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Lewis structures of ions Posted on January 26, by misterguch Now that you’ve mastered the art of drawing the Lewis structures of neutral covalent compounds, it’s time to draw the Lewis structures of polyatomic ions.
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