Metals and Non-metals — Mains Questions

Discuss the various methods of metal extraction, highlighting their underlying chemical principles and environmental implications. How can India balance its growing demand for metals with sustainable mining practices?

Analyze the significance of alloys in modern industrial applications. How do alloying elements modify the properties of base metals, and what are the challenges in developing advanced alloys for critical sectors?

Corrosion is a pervasive problem affecting infrastructure and economy. Elaborate on the mechanisms of metallic corrosion and critically evaluate the various prevention strategies employed. What role can policy play in promoting corrosion-resistant materials and practices?