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Subjects

Science

Corrosion and extraction basics

संक्षारण और धातु निष्कर्षण की मूल बातें

In this Class 10 Science topic from Metals and Non-metals, students learn how corrosion gradually damages metals through reactions with air, moisture, or other environmental factors. They explore everyday examples such as rusting, identify conditions that speed up corrosion, and understand prevention methods including painting, oiling, galvanising, alloying, and electroplating. The topic also introduces how useful metals are obtained from ores through concentration, conversion to oxides, reduction, and refining, with extraction methods linked to the metal’s reactivity.

Practice questions

Why are the human arm and whale forelimb considered homologous?MediumLevel 21Which method is generally used to extract highly reactive metals?EasyLevel 1What is the process of removing impurities from ore called?EasyLevel 1What is required for rusting of iron?EasyLevel 1What is the process of coating iron with zinc to prevent rusting called?EasyLevel 1What is mainly required for rusting of iron?EasyLevel 1