‘Metals and Non-metals' is the 3rd chapter in the NCERT class science textbook. The entire chapter has been covered in 5 PPTs. This part covers the following topics: · Corrosion · Prevention of corrosion · 24K gold vs. 22K gold · The wonder of ancient Indian metallurgy Download all five parts to get a firm grasp over concepts taught in the chapter and sail through all tests on the topics.

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