VK IAS - (Science and technology)
Science and tech articles Repository of @hinduhighlights - for upsc cse mains and @upschighlights- for upsc prelims exam Admin : @vikas_kanukollu
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#SnT
✅ Dimethyl Ether fuelled tractors
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✅Ethylene Oxide
🅾️Ethylene oxide- Pollutant
⚜️Pollutants are one major theme
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✅What is Goldene?
🅾️ It is a single-atom-thick sheet of gold, making it the world's thinnest gold leaf.
👉🏻Read about graphene here- Click here
🅾️Scientists have been trying to make 2D sheets of metals like this for a long time
🅾️Sensing different chemicals and substances-Catalysis - speeding up chemical reactions (like splitting water for clean energy).
⚠️Why is it significant?- Gold at this thinness has completely new properties, unlike the gold we usually think of.Bulk gold is 3D, with atoms arranged in all directions. Goldene is 2D, where atoms are confined to a single flat sheet. This fundamental difference in structure can dramatically alter its electrical, optical, and chemical behavior-can lead to new electronic properties, potentially making goldene more efficient at conducting electricity or interacting with light in specific ways.
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✅Semiconductors manufacturing Technology
🅾️What is a semiconductor chip? How is it manufactured?
⚜️A semiconductor has properties between a conductor (which conducts electricity) and an insulator (which does not). In its purest form a semiconductor is a very weak conductor of electricity.
⚜️However, its electrical properties can be changed by adding small amounts of certain substances called ‘dopants’. By taking a pure semiconductor and carefully injecting certain parts with specific dopants, complex circuits can be ‘printed’ on the semiconductor.
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#Environment #SnT
✅Bees that do not sting
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✅Humans spread virus to animals
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Repost from VK IAS- prelims (UPSC highlights)
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#Polity
✅Extra Neutral Alcohol
🅾️Primary ingredient for alcoholic beverages (whiskey, vodka, etc.)
🅾️It is derived from different sources — sugarcane molasses and grains — and is used in the production of alcoholic beverages such as whisky, vodka, gin, cane, liqueurs, and alcoholic fruit beverages.
🅾️Colorless, food-grade alcohol with neutral taste and smell=Also used in cosmetics, personal care products, and some industrial applications.
🅾️ENA is a byproduct of sugarcane processing, similar to ethanol- Issue is Diversion of ethanol (a byproduct of the sugar industry, like ENA) to biofuel blending.
✅Think of it like this:
⚜️Sugarcane Molasses: The raw material.
⚜️Ethanol: The first level of refinement-95%
⚜️ENA: Ethanol further refined to a higher purity to meet specific requirements-96%pure and above.
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