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Aluminium and its Compounds Video Lecture | Chemistry Class 11 - NEET

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FAQs on Aluminium and its Compounds Video Lecture - Chemistry Class 11 - NEET

1. What are the properties of aluminium?
Ans. Aluminium is a lightweight metal with a silver-white appearance. It is highly malleable and ductile, making it easy to shape into various forms. It is also a good conductor of electricity and has a high thermal conductivity. Additionally, aluminium is resistant to corrosion due to the formation of a protective oxide layer on its surface.
2. What are some common uses of aluminium?
Ans. Aluminium is widely used in various industries due to its advantageous properties. It is commonly used in the production of aircraft, cars, and other transportation vehicles due to its lightweight nature. It is also used in the construction industry for making doors, windows, and frames. Additionally, aluminium is used in packaging materials, electrical wires, and as a component in many household items.
3. Are aluminium compounds harmful to human health?
Ans. The majority of aluminium compounds are safe for human health when used in accordance with established guidelines. However, exposure to high levels of certain aluminium compounds, such as aluminium chloride or aluminium sulfate, may have adverse health effects. Prolonged exposure to these compounds can potentially cause respiratory problems, skin irritation, and even neurotoxicity. It is important to handle and use aluminium compounds safely and follow recommended safety precautions.
4. How is aluminium extracted from its ores?
Ans. Aluminium is primarily extracted from its ore, bauxite, through a process called the Bayer process. First, bauxite is crushed and mixed with a solution of sodium hydroxide. This mixture is then heated under pressure, causing the aluminium oxide in bauxite to dissolve and form sodium aluminate. The sodium aluminate solution is then filtered to remove impurities. Next, the solution is cooled, and aluminium hydroxide precipitates out. This precipitate is then calcined to produce pure aluminium oxide, which is further processed through electrolysis to obtain aluminium metal.
5. Can aluminium be recycled?
Ans. Yes, aluminium is highly recyclable and has a high recycling rate. Recycling aluminium requires significantly less energy and resources compared to producing it from raw materials. The recycling process involves melting down the aluminium scrap and reusing it to manufacture new products. Recycling aluminium not only conserves natural resources but also helps reduce greenhouse gas emissions associated with aluminium production.
195 videos|337 docs|190 tests
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